God the Son’s Assumption of Human Nature: A Pneumatological Reexamination of John Calvin on Christ’s Unfallen yet Mortal Humanity

Introduction

This article critically engages the ongoing theological debate concerning the nature of Christ’s humanity – specifically, whether it was fallen or unfallen. I argue that the key to resolving this controversy lies in identifying which position better affirms Christ’s ongoing engagement with fallenness itself. My central thesis is that Christ’s vicarious humanity is best understood as rooted in mortal vulnerability, representing the Incarnate Word’s openness to, and encounter with, a fallen creation under the powers of sin and death – rather than in the enhypostatic assumption of fallenness into his person. To develop this claim, the article turns to John Calvin as a case study. Calvin maintains that although Christ’s human nature was unfallen in its innocence, his birth through Mary brought him into genuine contact with fallenness, subjecting him to temptation and the assaults of hostile powers. From birth to death, Christ’s sinless humanity was preserved not statically, but dynamically – through the sanctifying power of the Holy Spirit. This pneumatologically informed Christological perspective, though implicit in Calvin’s theology, remains underdeveloped in much of the existing scholarship and thus warrants further critical exploration. ¹

First, this study offers a theologically critical reflection on the concept of Christ’s fallen humanity and the soteriological implications of the Incarnation, engaging recent scholarship from both its proponents and critics. Second, it explores Calvin’s paradoxical Christology concerning the unfallen Christ’s assumption of vulnerable mortality – his direct contact with fallen humanity in his vicarious life pro nobis – and how his exposure to temptation was safeguarded by the sanctifying power of the Holy Spirit. ² Third, the article develops a pneumatological account of Christ’s vicarious humanity from the standpoint of unfallenness, arguing that from the Incarnation to the crucifixion, the Son fully engages and sanctifies human fallenness on our behalf. Finally, it contends that Calvin’s classical, biblically grounded perspective on Christ’s humanity – despite its inherent Christological tensions – offers a constructive resolution to the contemporary debate over whether Christ assumed fallen humanity.

Contact or Assumption? Reconsidering the Fallenness Debate in Christology

The theological debate concerning Christ’s vicarious assumption of human nature centres on two contrasting perspectives. ³ The fallenness view maintains that Christ ontologically assumed fallen human nature, sanctifying it within the unity of his divine-human person. Following Adam’s Fall, the notion of Christ’s fallen humanity became pivotal in incarnational soteriology. This position emphasizes Christ’s solidarity with sinful humanity and interprets key theological categories – such as justification and sanctification – as fulfilled through the ontological assumption of fallenness. Advocates of this model emphasize ontological coherence, asserting that ‘Christ’s human nature was anhypostatically fallen but enhypostatically sanctified’. ⁴ For them, it is the universal assumption of fallen humanity – and its healing as sanctification in the Incarnation – that grounds the objective scope of salvation. However, as M. F. Wiles observes, when read through the healing metaphor of Gregory Nazianzen – ‘the unassumed is the unhealed’ – the soteriological arguments of the Church Fathers affirm a profoundly biblical vision of God with us: there is not a single moment in which God’s saving power fails to come into direct contact with humanity. ⁵ What is ultimately at stake is the preposition with – not the assumption of fallen humanity into the very being of the incarnate Son of God.

By contrast, the unfallen perspective argues that Christ’s humanity remained unfallen yet mortal and temptable, requiring continual sanctification by the Holy Spirit. This model introduces a paradoxical simultaneity: though unfallen, Christ’s humanity was vulnerable and fully exposed to fallenness. His anhypostatic humanity, on this account, resembles Adam’s prelapsarian state. Proponents of fallenness frequently appeal to Romans 8:3: ‘God sent his own Son in the likeness of sinful flesh to be a sin offering’. Yet Paul’s focus lies not on an ontological assumption of sinfulness at the Incarnation but on the crucifixion, where Christ bears sin’s condemnation. ⁶ The phrase ‘in the likeness of sinful flesh’ signifies not that Christ became fallen in himself, but that in his substitutionary death he took sin and death upon himself as the God-human, enacting God’s righteous judgment. ⁷ Thus, while the Incarnation is the ontological prerequisite for salvation, it must be distinguished from redemption itself. A two-step framework preserves theological integrity: (1) the Incarnation into humanity, and (2) the salvation of humanity through faith, not simply by ontological union.

Rolfe King raises this concern against T. F. Torrance, who affirms Christ’s assumption of fallen humanity and critically characterizes his account as a ‘transferring union’. ⁸ King warns that such a model risks docetism, since it implies that salvation derives primarily from Christ’s deity rather than from his vicarious humanity and human obedience. ⁹ By contrast, King highlights Calvin’s emphasis on a ‘conjoining union’, in which the unfallen Christ assumes true humanity as the ontological prerequisite for redemption, while atonement itself depends on the continuity of Christ’s obedient life and sacrificial death. ¹⁰ The danger of the fallenness model is that it can imply salvation is universally secured by the Incarnation alone, thereby diminishing the Spirit’s role in applying Christ’s work to believers.

Advocates of the fallenness model contend that their position safeguards against Apollinarianism. The Apollinarian controversy highlights the very danger they seek to avoid: Apollinaris allegedly maintained that Christ’s body came directly from heaven, thereby circumventing contamination by sinful flesh. While this view preserved Christ’s sinlessness, it did so at the cost of denying his full humanity. As Jerome Van Kuiken observes, a robust anti-Apollinarianism must account for Christ’s full ‘contact with’ fallen human nature within the hypostatic union. ¹¹ The non-assumptus principle insists that Christ healed human nature precisely by entering into its fallenness – mind and body, ‘warts and all’. ¹² Yet, this principle does not require the ontological assumption of fallenness into Christ’s person; rather, it demands his full experiential engagement with fallen conditions through his earthly life and suffering.

Thus, the central issue in anti-Apollinarian argumentation is not whether Christ’s assumed humanity was fallen, but whether his humanity was complete. ¹³ Confusion arises when ‘contact with’ fallenness is mistaken for its ontological ‘assumption’, blurring the distinction between Christ’s solidarity with sinners and the integrity of his person as the Incarnate Word. From a via media perspective, one may affirm Christ’s authentic engagement with fallen humanity without asserting that fallenness was assumed into his person. Preserving this distinction is vital for upholding the doctrine of Christ’s sinlessness.

The fallenness model, however, tends to conflate the Incarnation and the atonement into a single ontological event, thereby obscuring the historical economy of Christ’s obedience and suffering pro nobis. This soteriological ‘conflation’ identifies the Incarnation itself with the act of atonement, ¹⁴ thereby effacing the critical distinction between Christ’s ontological solidarity with humanity (his being-for-us) and his substitutionary obedience unto death (his act-for-us). By contrast, the unfallen view maintains that Christ – though impeccable – engaged the fallen condition through vulnerability, temptation, and mortality. Rather than collapsing Incarnation and atonement, it underscores the historical drama of Christ’s obedient life and sacrificial death. His ministry of compassion – touching lepers, resisting temptation, raising the dead – demonstrates redemptive contact with sin’s consequences without ontologically assuming sin itself.

Oliver Crisp’s theological trajectory exemplifies the instability of the fallenness model. Once a strong critic, Crisp initially argued that Christ’s humanity was unfallen, yet frail and susceptible to temptation. ¹⁵ More recently, however, he has conceded that Christ assumed a fallen but healed humanity, sanctified immediately by the Logos. ¹⁶ In this framework, Christ’s fallen nature could potentially sin but is prevented from doing so by divine ‘invincibility’. ¹⁷ Yet this reduces Christ’s human obedience to a divine inevitability rather than a lived reality. As Darren Sumner observes, in this model, even if Christ had succumbed to temptation, the divine nature would intervene to prevent sin – an account that undermines the integrity of Christ’s genuine human struggle. ¹⁸ Thus, the resolution to how Jesus – if embodying fallen humanity – can remain sinless while saving sinners lies not primarily in the historical person of Jesus, but in the eternal Logos ensarkos – the Word made flesh, dwelling redemptively among us. This tension reflects a subtle Apollinarian tendency, wherein Christ’s humanity becomes passive – immediately judged and healed by the Logos rather than actively sanctified through obedience. The divine nature overshadows, and effectively replaces, the human aspect. Such a perspective implies that Christ’s fallen humanity functions with virtually no agency in the work of salvation.

In his pre-shift Christological view, Crisp rightly expresses caution regarding the exclusive role of the Logos, which would render it impossible for Christ’s assumed fallen humanity to sin within the fallen model. ¹⁹ Crisp himself once underscored this dilemma: ‘Not if fallenness requires sinfulness. This is the crux upon which the fallenness view stands or falls.’ ²⁰ If Christ’s healed nature were not perfectly sanctified – comparable to unfallen human nature – it would inevitably engage with sinfulness, despite divine intervention through Christ’s deity or the Holy Spirit. His later shift toward a fallen-but-healed model collapses into contradiction, leaving no meaningful distinction from the unfallen view. If Christ’s assumed and healed humanity was immediately insulated from fallenness, then it was never truly fallen at all. Ultimately, such accounts destabilize the hypostatic union by subordinating Christ’s fallen humanity to his divinity and marginalizing the pneumatological dimension of salvation. Crisp exemplifies this theological imbalance in his revised formulation:

The Holy Spirit is still involved in the miracle of virginal conception, being the divine person upon whom terminates the act of providing the missing genetic material necessary for the production of a human male zygote. But his work ends there, so to speak. The act of sanctifying the human nature of Christ is given over to the Second Person of the Trinity. This does mean that on the vicarious humanity view the Spirit’s work in the Incarnation is circumscribed somewhat, which some may regard as a theological cost. ²¹

The essential issue in Crisp’s revised position lies in its Christological imbalance – elevating the role of the incarnate Logos in sanctifying Christ’s assumed fallen humanity, while marginalizing the Holy Spirit’s sanctifying agency. This emphasis implies that Christ’s humanity was universally fallen yet instantly perfected by divine assumption, minimizing the Spirit’s role in rendering that nature holy from conception. Both the fallenness and unfallenness models aim to resolve the central Christological dilemma: how Christ remains sinless while entering full solidarity with sinful humanity. The unfallen view holds that Christ faced genuine temptation in mortal, yet unfallen flesh, sanctified continuously by the Spirit. The fallenness model, paradoxically, affirms unfallenness by asserting that Christ’s fallen humanity was fully renewed in hypostatic union with the divine.

This raises a fundamental theological question: how can Christ be ontologically impeccable while maintaining authentic contact with human fallenness? Both perspectives reveal a paradoxical simultaneity – Christ is either fallen yet sanctified, or unfallen yet exposed to the full reality of sin and death. In either case, the Holy Spirit’s active role becomes indispensable. Conceived, preserved, and empowered by the Spirit, Christ’s vicarious humanity demands renewed pneumatological attention. Here, Calvin’s insights remain especially fruitful, inviting deeper reflection on the Spirit’s role in Christ’s sinless obedience.

Calvin’s Pneumatological Perspective on the Unfallen Christ’s Contact with Fallenness

In stark contrast to Crisp’s revised perspective, as previously noted, Calvin maintains that the work of the Holy Spirit encompasses both the generation and sanctification of Christ’s human nature. Within Calvin’s theological framework concerning the virginal conception, while a clear distinction is upheld between the person of the Spirit and Christ, the Spirit’s activity is continuous and cooperates integrally with Christ’s human nature throughout his life. Calvin explicitly asserts:

For we make Christ free of all stain not just because he was begotten of his mother without copulation with man, but because he was sanctified by the Spirit that the generation might be pure and undefiled as would have been true before Adam’s fall. . . .. Also, the sanctification of which John, chapter 17, speaks would have no place in divine nature [John 17:19]. Nor do we imagine that Adam’s seed is twofold, even though no infection came to Christ. For the generation of man is not unclean and vicious of itself, but is so as an accidental quality arising from the Fall. No wonder, then, that Christ, through whom integrity was to be restored, was exempted from common corruption. ²²

Calvin firmly holds that the purity of Christ’s human nature cannot be ascribed to the Virgin Mary, but is wholly the result of the sanctifying work of the Holy Spirit. ²³ He argues that the formation of Christ’s humanity constitutes an ontological recapitulation: within Mary’s womb, the Spirit enacts a restorative sanctification, returning human nature to its prelapsarian innocence. This act, akin to a temporal reversal, mirrors the original creation of Adam. Just as the first Adam was formed from nothing in Eden, so the New Adam, Christ, is brought forth through a miraculous creative and sanctifying act by the Spirit. In this divine work, the Holy Spirit not only conceives but also sanctifies Christ within Mary, revealing the profound theological truth of Christ’s humanity and the Spirit’s active role. ²⁴

Though Calvin does not explicitly state it, he implies that in generating Christ’s humanity, the Incarnate Word comes into contact with the fallenness of Mary’s humanity. ²⁵ This subtle but vital point highlights a hermeneutical limitation of the unfallen view, which can risk distancing the heavenly Son from the fallen world. The point of contact between Christ and human fallenness carries critical soteriological significance: it embodies the vicarious reality of the God-human Mediator – on our behalf, in solidarity with us, and dwelling within us eternally. In his Christological exegesis of [John 1:14], ‘the Word became flesh’, Calvin draws careful distinctions. Though Christ did not assume fallen humanity, he did take on a mortal body, subject to death – sin’s consequence. While sinless, he endured its effects as if he were a sinner, appearing like one but remaining untouched in essence.

The word Flesh expresses the meaning of the Evangelist more forcibly than if he had said that he was made man. He intended to show to what a mean and despicable condition the Son of God, on our account, descended from the height of his heavenly glory. When Scripture speaks of man contemptuously, it calls him flesh. Now, though there be so wide a distance between the spiritual glory of the speech of God and the abominable filth of our flesh, yet the Son of God stooped so low as to take upon himself that flesh, subject to so many miseries. The word flesh is not taken here for corrupt nature, (as it is often used by Paul), but for mortal man; though it marks disdainfully his frail and perishing nature. ²⁶

In my earlier work, I suggested that although John Calvin never explicitly affirms that Christ possessed a fallen human nature, certain elements of his interpretation – particularly his references to Christ’s mortal body and to the sanctifying work of the Holy Spirit – might be read as resonant with such a conception. ²⁷ Further reflection, however, indicates that this proposal requires greater nuance. Calvin firmly rejects the idea that Christ assumed Adam’s sinful nature after the Fall and consistently denies any direct causal link between fallenness and mortality in Christ’s humanity. Mortality and fallenness, therefore, should not be conflated within Calvin’s Christological framework. ²⁸ While I previously argued that the language of Christ’s ‘mortal body’ could suggest an implicit acceptance of fallenness, Calvin situates mortality within the Son’s redemptive mission. Death, as the consequence of sin (Rom. 6:23), properly belongs to post-Fall humanity; yet Christ’s assumption of mortal flesh signifies his voluntary participation in the condition he came to redeem. In this sense, the phrase ‘Christ’s mortal body’ carries primarily soteriological weight, pointing toward eternal life through his death and resurrection rather than indicating an ontological condition of fallenness. A more attentive reading also gives fuller weight to Calvin’s emphasis on the sanctifying agency of the Holy Spirit and to Christ’s own sanctifying action upon the humanity he assumed. Calvin underscores that, although Christ entered a world enslaved to sin and death, his human nature remained impeccable and unfallen. The Holy Spirit both protects and sanctifies Christ’s humanity, preserving it from the corruption characteristic of fallen human nature.

It appears strange, that Christ was liable to the temptations of the devil: for, when temptation falls on men, it must always be owing to sin and weakness. I reply: First, Christ took upon him our infirmity, but without sin (Hebrews 4:15). Secondly, it detracts no more from his glory, that he was exposed to temptations, than that he was clothed with our flesh: for he was made man on the condition that, along with our flesh, he should take upon him our feelings. But the whole difficulty lies in the first point. How was Christ surrounded by our weakness, so as to be capable of being tempted by Satan, and yet to be pure and free from all sin? The solution will not be difficult, if we recollect, that the nature of Adam, while it was still innocent, and reflected the brightness of the divine image, – was liable to temptations. All the bodily affections, that exist in man, are so many opportunities which Satan seizes to tempt him. It is justly reckoned a weakness of human nature, that our senses are affected by external objects. But this weakness would not be sinful, were it not for the presence of corruption; in consequence of which Satan never attacks us, without doing some injury, or, at least, without inflicting a slight wound. Christ was separated from us, in this respect, by the perfection of his nature; though we must not imagine him to have existed in that intermediate condition, which belonged to Adam, to whom it was only granted, that it was possible for him not to sin. We know, that Christ was fortified by the Spirit with such power, that the darts of Satan could not pierce him. ²⁹

In the Fall of Adam, temptation originated externally from Satan, while Adam was still unfallen. Yet sin infiltrated him through the misuse of free will and the desire to be like God, resulting in disobedience and disbelief – sins that triggered his immediate fall. Thereafter, the trajectory of sin shifted from external temptation to internal corruption, with Adam’s hubris escalating from humanity to divinity. In contrast, the redemptive movement of Christ, the new Adam, is marked by humble obedience. Descending from heaven, he brings eternal light into the darkness of fallen humanity. This descent reveals the Immanuel reality of the Incarnate Son’s entry into sinful humanity – not by assuming fallen nature into his person, but by engaging it through his unfallen humanity. Unlike Eden, where Adam fell, Christ faced Satan’s severe temptations in the wilderness after forty days of fasting – and triumphed. In Calvin’s theological thought, God’s reconciliation with sinful humanity requires that Adam’s disobedience be replaced by Christ’s obedience, fulfilled through his perfect obedience from the incarnation to the crucifixion. ³⁰ The Christological presupposition of this obedience is that the incarnate humanity and human will of Christ must be unfallen in order to accomplish God’s plan of restorative salvation in Christ.

But how could the human Jesus remain ontologically unfallen amid such destructive temptations? Calvin’s answer lies in the Holy Spirit. ³¹ The Spirit’s sanctification of Christ’s human nature is not due to fallenness within him, but to divine safeguarding. Christ’s humanity, while fully exposed to sin and evil, was preserved through direct ontological contact – not internal corruption. This can be analogized to compassionate doctors, fully protected while treating infectious patients – yet Christ’s protection by the Spirit, as the third person of the holy Triune God, infinitely surpasses any human analogy.

The sanctification of Christ’s vicarious humanity by the Holy Spirit, and his redemptive work, culminate at the crucifixion. Calvin writes:

And for their sakes I sanctify myself. By these words he explains more clearly from what source that sanctification flows, which is completed in us by the doctrine of the Gospel. It is, because he consecrated himself to the Father, that his holiness might come to us; for as the blessing on the first-fruits is spread over the whole harvest, so the Spirit of God cleanses us by the holiness of Christ and makes us partakers of it. Nor is this done by imputation only, for in that respect he is said to have been made to us righteousness; but he is likewise said to have been made to us sanctification, (1 Corinthians 1:30) because he has, so to speak, presented us to his Father in his own person, that we may be renewed to true holiness by his Spirit. Besides, though this sanctification belongs to the whole life of Christ, yet the highest illustration of it was given in the sacrifice of his death; for then he showed himself to be the true High Priest, by consecrating the temple, the altar, all the vessels, and the people, by the power of his Spirit. ³²

We must precisely capture the paradoxical nature of Calvin’s Christological perspective. Owing to his unfallen nature and sinlessness, and empowered by the Holy Spirit, Jesus sanctifies himself – not for his own benefit but for the sanctification of sinful humanity. His consecration to the Father enables his holiness to be dynamically transmitted to humanity, rejuvenating them through the Holy Spirit. This act of self-sanctification by Christ is actively imparted, representing more than just imputed righteousness; it incorporates his holiness for us, culminating in the crucifixion. As the eternal High Priest, Christ offered his entire being as the perfect and eternal atoning sacrifice to the Father, thereby consecrating our fallen humanity to the holy God. Importantly, the Holy Spirit’s sanctifying work is not connected to Christ’s fallen humanity or any inherent fallenness within him. Instead, this pneumatological event is essential for the complete sanctification of sinful humankind. Christ accomplished this, once-and-for-all, through a substitutionary act, and Calvin’s engagement with these soteriological implications continues to shape the lived faith of Christians in the present era.

Ontological Contact, Not Assumption: Calvin’s Pneumatological Christology

I contend that the decisive juncture between the fallen and unfallen perspectives on Christ’s humanity lies in the Word’s ontological contact with human fallenness. Here Calvin does not fully articulate the implications of such contact, exposing the central vulnerability of the unfallen model: its lack of inner-ontological integration within the doctrine of the Incarnation. Yet it is precisely this contact with fallenness that marks the point of convergence between the two perspectives.

Calvin, however, confines the communication of deity and humanity to a ‘hermeneutical’ level rather than probing its ontological depth. ³³ As R. Michael Allen observes, this indirect communication safeguards Christ’s deity from assuming fallenness, ensuring that the two natures remain ‘without infecting or despoiling’ one another. Even so, Calvin’s explicit declarations must take precedence over speculation. As Allen rightly notes, ‘Calvin never advocated a doctrine of Christ taking a fallen human nature’; ³⁴ instead, he consistently affirms the unfallen character of Christ’s vicarious humanity. This unfallenness – without retreating into a transcendence detached from redemption – preserves Christ’s frailty and temptation while affirming his perfect obedience to the Father pro nobis.

Calvin’s exegesis of Gethsemane illustrates this tension. Here Christ, broken and terrified, prays in the apparent absence of invincible deity. Likewise, in his cry of dereliction – ‘My God, my God, why have you forsaken me?’ (Matt. 27:46) – Calvin insists that the deity of Christ was phenomenologically concealed, that ‘the divine nature gave way to the weakness of the flesh’, and that the Son bore the penalty of sin and the judgment of death in our place. Yet this concealment does not imply any ontological diminution or disappearance of the deity. The incarnate Son, without ceasing to be the eternal Son of God, effects atonement primarily through his vicarious humanity as he stands under the judgment of God. ³⁵ Salvation is thus accomplished not through divine invincibility but through the Spirit’s power in Christ’s obedient suffering and resurrection.

The coherence of Calvin’s pneumatological soteriology emerges here with clarity: through the Spirit, Christ was conceived, sanctified at birth, empowered in life, and finally raised from the dead, ‘declared to be the Son of God with power’ (Rom. 1:4). ³⁶ The Spirit preserves Christ’s unfallen humanity from corruption while enabling his obedience. Calvin implicitly suggests that the Spirit sanctifies Christ’s humanity anhypostatically, prior to its assumption into the Son’s person. In this way, the Spirit is not marginal to the Incarnation but central, ensuring that Christ’s saving work remains a cooperative act of Son and Spirit.

Influenced by the Antiochene tradition, Calvin’s Christology reveals a point of vulnerability. While he safeguards the integrity of Christ’s humanity, he does not fully integrate the ontological role of the Son’s deity in salvation. Alexandrian Christology, by contrast, interprets Christ’s assumed humanity – fallen yet sanctified – as preserved solely by the Logos. ³⁷ Calvin, however, charts a different trajectory, one that risks imbalance yet remains firmly grounded in biblical revelation. His theology highlights instead the Spirit’s indispensable role in preserving Christ’s unfallen humanity amid contact with fallenness. What Christ accomplished once for all must still be actualized in believers through the Spirit, balancing the already and the not-yet without collapsing Incarnation and atonement into a single event.

Thus, while Calvin denies any ontological assumption of fallen humanity into the Son’s person, his pneumatological Christology stresses that Christ truly descended into the fallen order of creation without succumbing to sin. The mystery of the Incarnation lies not in speculative metaphysics but in the Spirit-anointed Christ who entered our darkness as the holy and unfallen Saviour. Empowered by the Spirit, he penetrates and overcomes fallenness, bearing it in obedience and finally destroying it through sacrificial love. In him, light shines in the darkness, and the darkness has not overcome it.

Harmonizing the Fallen and Unfallen Views: Paradoxical Simultaneity in Christ’s Vicarious Humanity

In this analysis, I propose my own pneumatological view – based on Calvin’s thought – that mediates between the unfallen and fallen positions on the vicarious humanity of Christ pro nobis, distinguishing three stages: generation, sanctification, and the assumption of human nature. ³⁸ My dynamic description of the ‘simultaneous’ and ‘distinct’ stages is informed by Crisp’s theological expressions. ³⁹ This perspective also operates under the dynamic principle of paradoxical simultaneity, emphasizing the inseparable relationship between Christ and the Holy Spirit.

(1) At the moment of conception, while Jesus’s human nature is not inherently ‘fallen’, it is prima facie, quasi-fallen due to its serious impairment by the destructive power of human fallenness. ⁴⁰ The humanity that Christ assumed bears mortality, as he was conceived in our sinful place, the womb of Mary, a mortal sinner. Rather than directly assuming our fallen human nature, Christ vicariously takes on our mortality, becoming a true redeemer of our sinful condition under the power of fallenness, without himself becoming a sinner. The damage influenced by fallenness is not inherent but rather accidental or external, preserving the essence of humanity as unfallen. Without necessitating deification, Christ’s human will, constitutive of his identity, remains neither fallen nor sinful; thus, Christ is not a born sinner as we are. ⁴¹ In terms of the via media, although I do not fully agree with Darren Sumner’s view, he suggests that Christ’s ‘human nature is fallen only anhypostatically’. ⁴² I critically reflect on this anhypostatic fallenness interpretation and constructively engage with Calvin’s ideas, without compromising his hermeneutical integrity.

Accordingly, in the Incarnation, the generated humanity of Christ in the womb of Mary vicariously participates in the common suffering under human fallenness, without assuming fallen human nature as one of us. The miraculous work of the Holy Spirit within Mary’s body parallels the general creation of humankind, with the notable exception of the physical union between man and woman. It is crucial to recognize that the essence of human nature, perfectly created by God according to his image in Christ, remains good. However, due to Adam’s Fall, all creation has been subjected to the curse of fallenness in a universal ontological sense. Thus, the virginity of Mary does not inherently guarantee unfallenness; she is, despite her unique role, one of the holiest sinners in Christian history, graced with divine favour as the Mother of Christ. Even without the hereditary transmission of sin and death through a biological father stemming from Adam’s Fall, the created human nature still existed under the universal impact of fallenness.

(2) At the very moment of general generation, it is simultaneously followed by a very special sanctification by the Holy Spirit. The two stages of the generation and sanctification of Christ’s humanity must be ontologically and chronologically distinct from each other, despite their simultaneity, to avoid easily falling into the fallenness viewpoint. The human nature of Christ becomes ‘unfallen’, being ontologically healed from the damage generated by fallenness in the dynamic sense that the Spirit of Holiness embraces the whole humanity once-and-for-all, which had never occurred in any birth event throughout human history. Through the divinely unprecedented and inconceivably mystical work of the Holy Spirit beyond human reason, Christ’s human nature is ‘unfallen’, as Calvin underlines; it is free from the general pollution of sin after Adam’s Fall. In contrast to Crisp’s late view of limitation on the work of the Holy Spirit, the sanctification as the healing of Christ’s humanity is unlimitedly done by the Spirit, not by the deity of Christ in the person. ⁴³ Someone might argue that my view does not quite make sense, on the grounds that there is a danger of embracing fallenness if the two are chronologically distinct. However, it should be noted that the fallenness position, Christologically, places Christ’s fallen humanity within the person of Christ. In contrast, my own modified unfallenness perspective antecedently situates Christ’s generally polluted, anhypostatic humanity in the perfect sanctification of the Holy Spirit before its enhypostatic assumption into the person of Christ.

However, the ‘unfallen’ state of Christ’s human nature needs to be theologically differentiated from the divine and absolute holiness of God, which is one of his incommunicable attributes. This divine purity means that sinful humankind is unable to approach the hidden and righteous God as ‘the consuming fire’, which would otherwise immediately annihilate every sinful being. ⁴⁴ Yet, in the eschatological time of salvation, God fully reveals his gracious nature in the Incarnate Christ, making known the God of Immanuel to sinful humankind. The innocence of the Incarnate Son of God, Jesus, from birth has a soteriological dimension as the representative substitute for us. He came to save us, not to judge us. Beyond the limitation of the Law, the absolute holiness of God shines forth in the perfect sanctification of the Holy Spirit in Christ as the new and eternal temple, in order to cleanse away our sins by the blood of God’s Lamb, redeem fallen humanity, and accept us as ‘a living sacrifice, holy and pleasing to God’ that the eternal Priest offers in himself. ⁴⁵

(3) At the very moment of sanctification by the Holy Spirit, it is simultaneously followed by Christ’s assumption of true humanity in his own person, as the God-man. In spite of the sanctification of human nature by the Holy Spirit and its assumption into the person of Christ, Christ’s humanity remains a mortal body, completely exposed to the vulnerabilities of temptation, sin, suffering, and death. The saving truth of the unfallen Christ never ceases to have contact with fallenness and even sinfulness in this not-yet-redeemed world. Paradoxically, the unfallen human nature of Christ lived a life in the fallen world as if the human Jesus assumed a fallen humanity, just like sinners. Similar to the condition before Adam’s fall, human nature itself is inherently capable of committing sin (posse peccare). Consequently, pre-Fall Adamic humanity was also open to death. This represents the Christological intersection as the via media between the fallenness and unfallenness camps. The former emphasizes that the deity of the ensarkos Logos prevents it from committing sin while acknowledging the mortal vulnerability of assumed fallen humanity. Similarly, the latter upholds Christ’s unfallen humanity but recognizes that, without the Holy Spirit, its mortal vulnerability would lead to the condition of sinful humanity. As mentioned above, in light of fallenness, just as fallen humanity must become ontologically unfallen in the person of Christ, the unfallenness perspective holds that unfallen humanity must experience fallenness in an existential way.

At the same time, despite human vulnerability being constantly assaulted by fallenness, the last Adam, through his own human will of obedience aligned with the eternal will of God, consistently overcomes temptation. He achieves this at every moment through the perfectly sanctifying power of the Holy Spirit within him. With both the Christological and Pneumatological dimensions, the Savior, Jesus, is uniquely maintained as a friend of sinners, without falling into being a sinner himself. It is through, with, and in the vicarious humanity of Christ as the new, holy, and eternal temple of God that we, justified sinners by the precious blood of the slain Lamb (Christ), are joyfully allowed to come into the throne of God’s holy deity, humbly relying on the perfect sanctification by the indwelling Holy Spirit within us, which also dwells in Jesus himself. Beyond the vexed debate on Christ’s unfallen or fallen nature, we come to realize and confess the saving truth of the Triune God for all of us in Christ.

The fallen view asserts that fallen humanity is integrated into divine union, presenting a stark contrast to Calvin’s perspective. Calvin contends that the unfallen Christ, embodying eternal light and life, lived among sinful humanity. Through the descending Immanuel movement, the Incarnation established an all-encompassing contact with darkness and death. Despite facing temptation and attacks, Christ was never overwhelmed by the evils of the world. Sustained by the dynamic sanctification of the Holy Spirit, he never ceased to be the Son of God. Triumphing over sin and evil, he fully engaged with human frailty while preserving his sinlessness. Paradoxically, the unfallen Christ experienced our vulnerability and mortality from within and vicariously bore sin as the God-human. On the cross, he fully identified with humanity’s condemnation under divine judgment, becoming sin itself to enact a substitutionary death that definitively eradicates sin for all in him.

Here lies the via media: the fallenness view emphasizes the Logos’s protection of a vulnerable humanity, while the unfallen view emphasizes the Spirit’s sanctification of a humanity otherwise open to sin. My proposal affirms that unfallen humanity must nevertheless encounter fallenness existentially. The last Adam triumphs where the first failed, his human will perfectly aligned with God’s will, empowered at every moment by the Spirit. Thus, Jesus remains the true friend of sinners without becoming one himself. Through, with, and in his Spirit-filled humanity – the new and eternal temple – we are drawn into God’s holy presence, justified by his blood and sanctified by the indwelling Spirit. Beyond the impasse of the fallenness debate, the saving truth emerges: in Christ, the Triune God redeems fallen humanity through unfallen humanity, by the Spirit, pro nobis.

Conclusion

In theological discourse on Christ’s nature, the fallenness perspective emphasizes Christ’s assumption of fallen human nature. This perspective proposes that his actions establish a direct link between God and fallen humanity, thereby facilitating Christ’s self-sanctification in the person at the Incarnation. The assumed humanity is already healed, judged, and prevented from falling by the deity of the Logos ensarkos, becoming unfallen in the ontological sense. Conversely, Calvin’s unfallenness perspective highlights the Holy Spirit’s pivotal role in sanctifying Jesus’s vicarious humanity – after the Incarnation, which is in open and direct contact with the destructive power of sin and death in its mortal vulnerability. The unfallen human Jesus is truly tempted and suffers from sin and evil. Nevertheless, Christ overcomes fallenness upon him by the power of the Holy Spirit. This aligns with the Spirit’s broader function in the redemption of humanity, accentuating the Holy Spirit’s active participation in salvation, consistent with both Paul’s biblical teachings and Calvin’s theological framework. Unlike the fallenness view, which inclines toward an ontologically already-realized salvation through the Incarnation – while still acknowledging the Spirit’s role – Calvin emphasizes the Holy Spirit’s continuous work in dynamically unifying the Incarnation with the practical application of Christ’s salvation to fallen humankind. This ongoing mediation fosters a personal relationship between Christ and believers, necessitating active faith for the realization of salvation. Centred on the mystical union through the Holy Spirit, Calvin’s model promotes a dynamic and relational soteriology that balances the vicarious and mediatory aspects of Christ’s humanity. This approach highlights the crucial contact points between the Incarnate Christ and human fallenness, essential for understanding salvation dynamics. Informed by a Christology that is applied pneumatically, Calvin’s own stance constructively offers a theological breakthrough in the contemporary debate over whether Christ assumed fallen or unfallen humanity pro nobis.