Abstract
This paper examines the Vietnamese expression “Ông Trời có mắt” (“Heaven has eyes”) as a window into the moral, theological, and symbolic worlds of Vietnamese religiosity. While often interpreted as a proverb of cosmic surveillance, the saying points to a deeper and more relational understanding of Ông Trời, the transcendent figure who sees, judges, and cares for human life. Across Vietnam’s religious landscape, including Tam giáo (the Three Teachings: Confucianism, Buddhism, and Taoism), Caodaism, and Christianity, the motif of the Divine Eye functions as a shared symbolic reservoir through which the Vietnamese imagine divine oversight, justice, and compassion. Yet each tradition construes this “heavenly gaze” in distinct ways, shaped by unique cosmologies, spiritual aspirations, and historical developments.
Drawing on cultural-religious analysis, comparative theology, and the interpretive frameworks of Paul Ricoeur and Terry C. Muck, this study traces how the symbol of the Divine Eye moves from an abstract principle of moral causality in the Three Teachings, to a mystical-yet-engaged presence in Caodaism, and finally to a redemptive, incarnational vision in Christianity. Ricoeur’s theory of symbol illuminates how the Divine Eye generates ethical meaning and undergoes refiguration across traditions, while Muck’s fulfillment theology highlights the ways Vietnamese religions offer partial yet significant anticipations of the biblical God who sees and saves.
By situating the Vietnamese understanding of divine watchfulness within a broader theological and missional framework, the paper argues that the motif “Ông Trời có mắt” reflects both continuity and progression in Vietnam’s perception of the divine. The conclusion outlines implications for Vietnamese Christian mission, emphasizing humility, dialogical engagement, and a renewed appreciation for the ways God’s self-disclosure has long been present within Vietnamese religious experience.
Introduction
Among the Vietnamese, the familiar saying “Ông Trời có mắt” (“Heaven has eyes”) expresses more than moral surveillance; it conveys a personal vision of Ông Trời as one who both sees and cares. From a Vietnamese perspective, Ông Trời observes human conduct and rewards or judges according to a moral order. Yet Vietnamese religious traditions, including the Three Teachings, Caodaism, and Christianity, articulate this “divine gaze” in distinct ways, raising a central question: Do these traditions truly envision the same divine eyes?
Scholarly studies often treat Ông Trời as an abstract moral principle or a cultural construct shaped by Chinese philosophy, but rarely examine how divine vision–watching, judging, or caring–functions across Vietnamese religious systems or what it reveals about Vietnamese understandings of God. Within Christian scholarship, the connection between this motif and missional or contextual theology has received even less attention. Accordingly, key questions remain concerning how different traditions portray divine vision, the extent of their shared moral framework, and the implications for Christian theology and interreligious engagement in Vietnam.
In response, this paper examines the Divine Eye as a symbol of transcendent moral watchfulness across Vietnamese religions. It offers a comparative analysis of the Three Teachings, Caodaism, and Christianity, tracing both convergence and divergence in their depictions of divine oversight. More importantly, it follows the development of the image of Ông Trời through the theme of watchfulness, arguing that in Christianity the person and ministry of Jesus bring this divine portrait to its fullest expression.
Employing a multidisciplinary approach that integrates cultural-religious analysis, comparative theology, and reflective interpretation, the study first surveys recent scholarship on Ông Trời. Drawing on Paul Ricoeur and Terry Muck, it then compares the heavenly gaze across traditions to trace the evolving contours of divine vision in Vietnam, concluding with implications for Vietnamese Christians engaged in interreligious dialogue and practice.
Historical and religious roots of Ông Trời in Vietnamese religiosity
Historical approach
The belief in Ông Trời, often translated as “Minister of the Sky,” is deeply rooted in Vietnamese indigenous religion. Although its precise origin is uncertain, scholars widely agree that Vietnamese folk tradition uses the term Ông Trời for a shared personal figure who blesses or judges human conduct.
In The Ancient Civilization of Vietnam, Nguyễn Văn (1995) portrays Ông Trời as governing nature and human destiny, overseeing life and death, fortune and calamity. He is believed to see, judge, and act, symbolized by trời (heaven) in relation to đất (earth) as the cosmos (Nguyễn, 1995: 245). In Vietnamese Civilization, Nguyễn (2016) adds that human circumstances reflect moral conduct, highlighting the need for a multidimensional interpretation of Ông Trời in Vietnam.
Furthermore, Cadière (1997) describes Vietnamese veneration of Ông Trời in On Vietnamese Traditional Culture and Beliefs, focusing on the early 20th-century imperial Heaven Worship Ceremony at Huế. He interprets the rite as the highest expression of Vietnamese religiosity, affirming Ông Trời as supreme moral and cosmic authority, with the emperor acting as Heaven’s representative. The ceremony, Cadière argues, unites Confucian cosmology, royal legitimacy, and popular devotion, embodying harmony between Heaven and humanity (Cadière, 1997: 106).
Building on the studies of Nguyễn (1995, 2016) and Cadière (1997), Vietnamese worship of Ông Trời appears to have functioned less as a formal religion than as an informal, unsystematic belief. Accordingly, while the linguistic term implies a shared personal figure, scholars portray Ông Trời as an abstract moral principle governing ultimate justice and human destiny.
Religious approach
The syncretism of the Three Teachings
Scholars note that prolonged political instability reshaped the Three Teachings in Vietnam, distancing them from their Chinese origins. As a result, Vietnamese Taoism emphasized magical and mystical views of divinity, Confucianism portrayed God through the king as “Son of Heaven” with moral authority, and Buddhist imagery of Buddhas and Bodhisattvas informed Vietnamese conceptions of divine attributes.
Bringing Confucian and Taoist thought into conversation within the Vietnamese context, Vietnamese Culture, Religion, and Belief: Through the Scholarly Lens of L. Cadière shows how Confucianism and Taoism were internally reshaped in Vietnam to form interconnected yet distinct visions of Ông Trời. As Cadière (Đỗ, 2006) notes, this process produced multiple interpretive frames rather than a single, uniform theology of the divine. Both Cadière (Đỗ, 2006) and Nguyễn (2016) nevertheless concur that each tradition contributes a particular portrait of this supreme figure.
According to Huyên, Taoist-inflected beliefs portray Ông Trời in more mythic and bureaucratic terms, akin to the Jade Emperor presiding over a celestial court of minor gods (Nguyễn, 2016: 261–262). Further elaborations into the Taoist Divinity appear in chapter 3, “Thought and Religion,” of Culture and Customs of Vietnam studied by McLeod and Nguyen (2001). According to these scholars, Taoism took root in Vietnam primarily through popular religious practices that resonated with indigenous spirit worship. Rituals such as purification and incantation aligned naturally with local animism, allowing Taoist deities and rites to merge into Vietnamese supernaturalism, eventually becoming nearly indistinguishable from native traditions.
Confucianism, by contrast, entered as a doctrine of governance and later stood as one of the Three Teachings. In this setting, the term Ông Trời denoted a shared personal figure granting the Heavenly Mandate to the virtuous ruler. At this point, Nguyễn Hiến Lê’s The Political Philosophy of Confucianism deepens the analysis by highlighting the religious dimension of Vietnamese Confucianism within its political-historical context. Nguyễn (1958: 7) describes the cosmos as emerging from primordial chaos through the Supreme Ultimate, from which yin and yang generate all things, with Heaven as the sovereign One above spirits, deities, and humankind.
Because humans derive their nature from Heaven, they are bound to the Heavenly Way: actions aligned with it are right, while those that violate it are wrong. For Nguyễn (1958: 8), this is not abstract morality but Heaven’s will, manifested in the people’s well-being and collective conscience. Accordingly, while all revere Heaven and honor the spirits, only the Son of Heaven sacrifices directly to Heaven; nobles venerate directional spirits, and commoners honor household ancestors.
Notably, Nguyễn (1958) emphasizes the relational order linking Heaven, ruler, and people. In Confucian thought, Heaven reigns as supreme sovereign who cares for the people, while governance is mediated through the Son of Heaven, Heaven’s appointed representative accountable for public welfare (Nguyễn, 1958: 23–24). Unjust rule invites heavenly warnings through calamity, and persistent failure results in the withdrawal of the Heavenly Mandate. Political legitimacy thus rests on embodying Heaven’s virtue and wisdom in service to the people (Nguyễn, 1958).
Linguistically, Vietnamese Buddhist discourse separates the term Ông Trời from Buddhas and Bodhisattvas. Yet conceptually, Zen master Thích Nhất Hạnh (Nguyễn, 1994) traces Buddhism’s adaptation in Vietnam, noting early depictions of the Bụt “Buddha” as possessing extraordinary powers and awareness reminiscent of Ông Trời. However, the Buddha is distinguished as an accessible, compassionate figure who aids the virtuous and the suffering without punishing the wicked, exercising powers that transcend natural forces (Nguyễn, 1994: 40). Thích (Nguyễn, 1994), however, does not further explain how these distinctions emerged within Vietnamese Buddhist tradition.
In this respect, the close entanglement of the Three Teachings with Vietnamese political life shaped the concept of Ông Trời through a process of Vietnamization. Although each tradition offers a distinct interpretation, they linguistically converge on the term Ông Trời, depicting this shared personal figure as reigning from above and judging according to moral conduct.
A key limitation of existing scholarship is its tendency to privilege the political dimensions of the Three Teachings at the expense of their religious character. Everyday practices such as household worship of Ông Trời and popular images—the net, eyes, or lamp of Heaven—reveal a rich fusion of Confucian, Taoist, and indigenous beliefs that remains underexplored. Further study of these lived expressions is essential for understanding contemporary Vietnamese religiosity.
Caodaism
Regarding Caodaism, recent studies argue that it should not be understood merely as a syncretic blend of traditions but as a collective response to the fragmentation of Vietnam’s traditional faiths, political instability, and the pervasive influence of colonialism and Christianity. Accordingly, the Caodaist conception of God represents both the adaptation of external theological ideas and the creative expression of indigenous spiritual aspirations.
Who, then, is Cao Đài? According to Oliver (1976), Cao Đài is identified with the Jade Emperor, explicitly elevating the linguistic term and shared concept of Ông Trời into a personal deity. The term Cao Đài literally means “high tower,” referring to God, while Caodaism denotes the religion and Caodaists its adherents. Oliver (1976: 7) notes that this name emerged on Christmas Eve 1925, when a spirit previously known as “AAA” revealed himself to early Caodaist mediums as Cao Đài, “Religious Master of the Southern Quarter.” In official usage, this deity bears the title “High Palace Immortal, Great Bodhisattva, and Venerable Saint.”
In Cao Dai: Out of Many, One A Religion of Unity, Bùi and Beck (2006: 39) emphasize the oneness of Cao Đài, symbolized by the left shining eye, a central icon in Caodaist imagery. They stress that there is only one God, known under different names throughout the world, and that portraying Him in human form would restrict His universality. Instead, the Divine Eye serves as His symbol, expressing both universal and individual consciousness.
Cao Đài is revered as the Supreme God who transcends and governs the cosmos. As Phạm (1969: 73) explains, while many spirits and deities exist, Caodaism affirms Cao Đài as the ultimate cause and governing principle of all beings, worthy of worship and service. This view is echoed by Oliver (1976: 42), who notes that the Caodaist “triple-sign” consistently portrays the triune God as supreme, “higher than any summit, broader than any space, more enduring than all time.”
In History and Philosophy of Caodaism, Gobron (1950) portrays Cao Đài as the embodiment of divine wisdom and absolute sovereignty, through whom divine truth is revealed and humanity’s awareness of its spiritual origin renewed. By uniting the human spirit with the Divine Spirit, Cao Đài guides humanity as a benevolent presence, enabling reason attuned to the divine to overcome ignorance and attain liberation (Gobron, 1950: 40). In this sense, Cao Đài provides divine illumination for human growth, guidance, and salvation.
Under this divine sovereignty, Caodaism is understood as a divinely appointed synthesis of all religions, a universal spiritual philosophy aimed at transcending sectarian boundaries and fostering harmony among faiths worldwide (Gobron, 1950: 40). Accordingly, the Supreme Being establishes Caodaism to affirm a common origin of all religions, calling humanity not to discriminate among traditions but to love one another, cultivate inner virtue, and discern God’s presence within themselves (Bùi and Beck, 2006: 22).
In reflection, examining Cao Đài through diverse scholarly lenses reveals both convergence and limitation. Despite differing theological and cultural frameworks, most accounts depict Cao Đài as an active deity who continually guides and intervenes in Vietnamese life. Though transcendent and ultimately unnamable, He remains near through divine revelation and the election of the Vietnamese for His purposes. Yet while these studies acknowledge the veneration of multiple deities and the communal nature of Caodaist worship, they insufficiently address how personally central Cao Đài and the Supreme Being’s oversight are to individual adherents.
Contextual theological lens: Seeing the Divine Eye through fulfillment and mission
To interpret the Divine Eye across Vietnamese religions, one must clarify its layered meanings and trace its expressions across traditions. This study employs Paul Ricoeur’s symbolic framework and Terry C. Muck’s fulfillment theology to provide a coherent foundation for analyzing the continuity and development of divine watchfulness in the Vietnamese context.
Paul Ricoeur and the meaning of symbol
According to Ricoeur (1967: 15), a symbol operates on multiple levels of meaning through a double intentionality in which its literal sense is never exhaustive. Its apparent meaning simultaneously points beyond itself, analogically directing interpretation toward a deeper meaning that can be accessed only through, and never apart from, the literal form. For Ricoeur (1967: 16, 347), the symbol is thus both donative, offering meaning, and generative, giving rise to thought.
Expanding on this, Ricoeur (2003: 24) explains that symbols and metaphors operate through a multilayered structure that “redescribes” reality, reframing experience from the perspective of the self. In doing so, the symbol discloses dimensions of human experience that would otherwise remain hidden (Ricoeur, 1967: 165).
Ricoeur (1967: 34) ultimately argues that symbols prepare the way for ethical meaning by reshaping the moral imagination. Concepts such as purification emerge from the symbolism of defilement, which renders abstract moral ideas intelligible. Likewise, the symbolism of sin depicts a ruptured or withdrawn relationship (Ricoeur, 1967: 74). As Ricoeur (1967) observes, “the revolution in the images prepares the way for the revolution in the meanings themselves” (p. 74).
Ricoeur (2003: 5) further contends that the same symbol may be refigured differently across distinct narrative worlds. He explains that a hermeneutical shift moves interpretation from isolated sentences to discourse as a whole, whether poetic, narrative, or essayistic. At this level, attention shifts from the formal structure of metaphor to its referential function, namely its capacity to “redescribe” reality. Metaphor thus becomes an act of refiguration through which language discloses new possibilities of meaning and reshapes perception of the world.
Terry C. Muck and fulfillment theology
Historically, various scholars have shaped fulfillment theology (FT), including F. D. Maurice, Max Müller, J. N. Farquhar, Karl Ludwig Reichelt, and Roman Catholic theologians like Jean Daniélou and Karl Rahner. This study, however, adopts Terry C. Muck’s formulation for its systematic structure and its accessible engagement with readers across religious traditions.
Although FT initially emerged from the collective hypotheses of Western scholars, according to Muck’s observation, the Edinburgh World Missionary Conference of 1910 marked its decisive milestone, as missionaries around the world affirmed the presence of general revelation within other religions. As Muck (2021: 138) aptly frames, Fulfillment Theory is a form of Covenant Theology. It offers a specific way of talking about how God’s first chosen people, the Israelites, continue to exist, a dynamic left uncertain in many forms of Covenant Theology. . .Stated in world religion terms, then, Christianity neither destroys nor replaces Judaism, but fulfills its deepest spiritual impulses.
To articulate the missio Dei, Muck (2021: 138) outlines five core components of FT: a universal offer of salvation, a robust doctrine of general revelation, progressive revelation over time, salvation through Christ alone, and a commitment to dialogical discourse. On this basis, he argues that Christians cannot dismiss general revelation in other religions, since all people participate in a single narrative of God’s progressive self-disclosure to humanity (Muck, 2021: 141). Crucially, Muck (2021: 144) affirms that God wills the salvation of all people, a conviction grounded not in speculation about final judgment but in Scripture’s witness to God’s character. Thus, while it is unreasonable to envision a loving God who does not desire universal salvation, it is equally reasonable to affirm that God does not save indiscriminately apart from human response.
From this premise, truth may also be found within other religions. Muck (2021) argues that FT’s distinctive strength lies in its openness to truth wherever it appears. Fulfillment theologians therefore recognize truth not only within Christianity but also across cultures, philosophical traditions, and especially other faiths, guided by the conviction that truth remains truth regardless of context (Muck, 2021: 144). For Muck, this entails a Christian journey of discerning the Creator’s imprint within other religious traditions. As Christians encounter unfamiliar religious landscapes, he suggests they should seek signs of God’s presence in a world created by God, redeemed in Christ, and sustained by the Spirit, a world in which the original graces of creation have not vanished (Muck, 2014: 10).
Meanwhile, Muck (2021) does not deny the irreplaceable role of Jesus Christ as the sole means of salvation. Alongside other Fulfillment theologians, Muck (2021: 145) decisively affirms, “They may not know that their salvation would be impossible without what God did through Jesus Christ. But salvation comes only through Jesus Christ, whether known about or not.”
Muck (2021) maintains that within FT, the truth dimension outweighs soteriological concerns. Rather than determining who may be saved, FT seeks to cultivate Dialogical Discourse, understood not as formal debate but as relational engagement grounded in shared truth-seeking and lived experience. Since genuine truth in other traditions can be discerned only by listening to those for whom it is meaningful, dialogue is essential for recognizing truth wherever it appears (Muck, 2021: 145). Dialogical Discourse thus calls Christians to embody respect, humility, and genuine commitment in their engagement with followers of other religions.
Above all, FT highlights human limitation and divine mystery. While Christians view their faith as a story culminating in Christ, Muck (2021: 147) contends that this journey can be enriched by the spiritual insights of all humanity. Even as Christians affirm salvation through Christ alone, they must acknowledge that its ultimate recipients remain beyond human knowledge. Humanity’s encounter with God thus remains unfinished, calling Christians to stay attentive to this unfolding story, open to learning from others while faithful to their core convictions (Muck, 2021: 147).
The Divine Eye: From a symbol to a belief
Ricoeur’s framework chiefly serves to recognize the multilayered meanings embedded in the notion of the heavenly gaze. Building on his insight that a symbol “gives rise to thought,” the Divine Eye can be understood as a shared symbolic reservoir across Vietnamese religious traditions. Its significance lies in its moral density: the eye gathers notions of justice, vigilance, oversight, and benevolence into a single, far-reaching symbol readily recognized within and across Vietnamese contexts.
Because symbols are continually refigured within distinct narrative worlds, the divine gaze takes on different meanings within folk belief, Confucian–Buddhist–Daoist traditions, Caodaism, and Christianity. More importantly, Ricoeur’s movement from symbol to ethical awareness to relational reappropriation illuminates how this imagery shifts from portraying a deity of moral surveillance to unveiling the biblical El Roi, the God whose act of seeing is inseparable from His redemptive engagement with human suffering.
Muck’s FT also provides a valuable lens for interpreting Vietnamese religions in general and the concept of the Divine Eye in particular. First, this framework recognizes the presence of pre-knowledge of God within Vietnamese traditions, including indigenous belief, the Three Teachings, and Caodaism. Second, it suggests that the divine attributes symbolized through the image of the eye, such as God’s omniscience, omnipotence, and righteousness, have been progressively and partially fulfilled within these religious systems. Third, FT helps relate the caring deities of Vietnamese religions to the incarnate God revealed in the Gospels. Finally, it equips Vietnamese Christians to engage followers of other faiths with respect, humility, and genuine commitment for the sake of faithful gospel witness.
Do the Vietnamese gods share the same eyes?
Shared symbol: The transcendent moral watchfulness
In one respect, the answer to the question posed above is “Yes, ‘they’ do.” That is, the notion of “Heaven has eyes” appears across Vietnamese religions as an analogical expression of moral oversight, justice, and divine care.
Within the Three Teachings, Ông Trời is understood as the guardian of moral order. At a basic level, as Anh Q. Tran (2018: 15) observes, Confucian adherents acknowledge a supreme deity who oversees, directs, and sustains all things on earth. For clarification, in Classified Discourses from the Cloud Terrace (1773)—an encyclopedic synthesis of cosmology, ethics, and classical learning—the Vietnamese scholar Lê Quý Đôn (Lê, 2006: 63) succinctly states: “Heaven administers justice, and earth bears witness,” encapsulating the divinity’s moral oversight. Grounded in this belief in Ông Trời as a divine judge, the Vietnamese often remind one another, Do what’s good, and good draws near, Heaven keeps blessings for the sincere. (Huệ, 2010: 59)
Additionally, The Treatise on Emptiness (1252) by Emperor Trần (1972: 53)—a foundational Buddhist work that integrates Zen insight with royal moral instruction—teaches that the petty person concerns himself only with wealth, seizing what belongs to others and living selfishly, unaware that genuine prosperity comes from Heaven. Such persons despise Heaven’s moral order and earthly law, facing judgment in life and punishment after death. Heaven’s net, Tông warns, is vast and inescapable: the righteous find peace, while evildoers inevitably bear the consequences.
Caodaism likewise presents Cao Đài as a moral witness no less than the Three Teachings do. According to The No-Form Branch: Scripture of the Four Ritual Hours (20th c.) of the Vô Vi sect, which prescribes four daily liturgies emphasizing contemplative purity and non-action, “Heaven and Earth have appointed various deities to oversee human transgressions, and depending on the gravity of one’s offenses, these deities reduce the blessings allotted to that person” (Tòa Thánh Cao Đài Chiếu Minh, 1934: 15). In other words, through these deities, Cao Đài actively monitors human deeds, both good and evil. Consequently, Caodaists place wholehearted trust in the ultimate justice of Cao Đài, who judges impartially according to one’s earthly conduct. As stated in Cao-Dai Great Way: The Grand Cycle of Esoteric Teaching (1934) (Cao-Đài Đại-Đạo Chiếu-Minh, 2020: 158), The Creator weighs all things in perfect right: Good earns His blessing, evil meets His might. Not even a hair’s breadth can be set aside. What people deem small still brings fate’s tide.
Fulfilling Buddhist and Caodaist portrayals of Ông Trời, Christian Scripture uniquely emphasizes the immanent frame of God’s compassionate gaze. Scripture repeatedly affirms God’s all-seeing care: “From heaven the Lord looks down and sees all mankind” (Psalm 33:13–14); “The eyes of the Lord are everywhere, keeping watch on the wicked and the good” (Prov 15:3); and nothing is hidden from Him, for He “sees everything under the heavens” (Job 28:24).
In Vietnamese folk religions, Ông Trời is understood not only as the One who sees but also as the One who cares. As Lê (2006: 376) explains, all things, from houses and tools to food and clothing, possess an inherent order originating from Heaven, while sages discern human needs and shape these materials accordingly. Thus, what humans create is not separate from Heaven’s provision. This belief, sustained through centuries of conflict, has enabled the Vietnamese to place enduring trust in Ông Trời’s goodness and protection. This land and mountains belong to Heaven’s decree. Who dares divide the waters, or move the steadfast peaks? (Huệ, 2010: 60)
Likewise, Caodaist theology presents Cao Đài as a compassionate caretaker. As described in the Esoteric Teaching of Caodaism, the Supreme Being is moved by sorrow for His suffering children and descends to impart His teachings out of mercy. Through this compassion, He establishes the Great Way to rescue humanity from sin and the cycles of suffering (Cao-Đài Đại-Đạo Chiếu-Minh, 2020: 132, 454). Hence, Caodaists often chant, Moved by the compassion of the Most High Cao-Đài, He descends in mercy to save the world, manifesting at the Immortal Altar. (Tòa Thánh Cao Đài Chiếu Minh, 1934: 14)
To fulfill the theme of divine guardianship in Vietnamese faith traditions, Christianity reveals the immanent gaze of a God who both sees and cares. Scripture consistently affirms this compassion: God sees Leah’s suffering and acts (Gen 29:31); He hears Israel’s cries in Egypt and is “concerned about their suffering” (Exo 3:7); Jesus, the incarnated God, shows compassion for the harassed and helpless crowds (Matt 9:36); and He even weeps with friends in their grief (John 11:33–35).
In brief, while Vietnamese religious traditions share a conviction of inescapable divine care, Christian Scripture uniquely fulfills this through God’s immanent, intervening gaze.
Different gazes, different theologies
On the other hand, the meaning of Ông Trời’s “seeing” varies across Vietnamese religious traditions, reflecting differing perspectives on His nature and attributes.
Grounded in Confucian cosmology, adherents of the Three Teachings affirm that: What is meant by the Supreme Ultimate? The Supreme Ultimate is the Energy [khí] and the Principle [lý]. This means that the Principle is not a thing but the origin of things or the essence of things. (Tran, 2018: 166)
Put differently, divine oversight here functions as an abstract principle of moral causality embedded in the human heart. Rather than a visible sky or a literal watching eye, the Confucian Supreme Deity is understood as Heaven’s Law and Heaven’s Heart, the Sovereign who governs and perceives through the Mandate of Heaven, though remaining beyond human sight (Nguyễn et al., 2002: 36). Lê (2006: 43) notes that, owing to its intangible and profound nature, only sages and exemplary persons can apprehend and articulate this moral-cosmic principle, preserving it in written form and lived norms rather than treating it casually.
Drawing on Buddhist and Taoist thought, Lives of the Eminent Zen Masters (14th c.)—a biographical anthology of Vietnamese Zen lineages—affirms that “the Way, in its very nature, possesses neither form nor visible attributes” (Ngô, 1990). Similarly, Recorded Sayings of Tuệ Trung Thượng Sĩ (13th c.), a collection emphasizing nondual insight and lay enlightenment, teaches that the divine fire permeating one’s being is not sought externally but disclosed through inward self-examination (Tuệ, n.d.: 38). Because human nature is itself Bodhi, complete and self-sufficient, entrusting oneself to this truth constitutes genuine Zen insight. Within this framework, divine vigilance operates primarily as a principle of moral causality, guiding individuals toward enlightenment by awakening their inherent Buddha-nature.
More humanized in appearance and communication than the Three Teachings’ image of Ông Trời, the Left Eye in Caodaism signifies the Supreme Being’s compassion amid the world’s disunity and suffering. Emphasizing harmony across religions, Cao Đài teaches that believers must refrain from speaking ill of others, remembering that the Master is present in all matters (Đại-Đạo Tam-Kỳ Phổ-Độ, 1928: 9). Rather than fostering hostility toward other faiths, Cao Đài urges compassion for those still bound in suffering and rebirth, extending mercy that may lead them toward deliverance (Đại-Đạo Tam-Kỳ Phổ-Độ, 1928: 30). In this sense, Cao Đài’s appearance and teachings are distinctly more relational and engaged.
Nevertheless, His presence remains inaccessible due to His transcendent nature. In its Esoteric Teaching, Caodaism distinguishes two realms: the Master dwells above, while disciples remain below. “Above, the Master bestows grace and providential care; below, disciples must endure hardship with perseverance” (Cao-Đài Đại-Đạo Chiếu-Minh, 2020: 172). No Caodaist can perceive Him through ordinary sight or worldly categories of knowledge (Cao-Đài Đại-Đạo Chiếu-Minh, 2020: 68). Developing the Three Teachings, Caodaism further affirms that because Heaven is the cosmic Principle, supremely numinous and all-encompassing, the Master has no physical body or human form; thus, veneration of the Divine Eye is veneration of the Master Himself (Cao-Đài Đại-Đạo Chiếu-Minh, 2020: 224).
Concerning divine encounter, Cao Đài’s communication remains indirect, mediated through appointed instruments such as mediums and spirit-writing séances. Compilation of Sacred Messages (1928) explains that practitioners still the mind so the True Spirit may receive the Master’s instruction, while the hand functions only as its recording instrument. Each character is guided and corrected by the Master through the True Spirit, making spirit writing a cooperative act between the Master and the True Spirit, expressed through the writer’s hand (Đại-Đạo Tam-Kỳ Phổ-Độ, 1928: 7–8). Accordingly, only a select few Caodaists are permitted direct communication with Cao Đài, due both to His transcendence and His sovereign self-disclosure.
Countering this inaccessible transcendence, the biblical God uniquely offers an immanent gaze, proving to be the One who intervenes and redeems. In Exodus 3, He is the God who “sees, hears, and knows” Israel’s suffering (v. 7), who both “comes down” and “brings up” His people (v. 8). Their cries reach Him, and He responds decisively to the severity of their oppression (Hamilton, 2011: 55). As Hamilton (2011: 55) observes, when the situation demands it, “God can leave the office.” Likewise, in the story of Hagar, the abandoned mother names God El Roi, “the God who sees” (Gen 16:13), marking His attentive recognition of her distress and His promise of a hopeful future for her son (Von Rad, 1973: 194).
At Jericho, Jesus stops to befriend and visit Zacchaeus and his household despite their social exclusion (Luke 19). Verses 9–10 declare that salvation has come because “the Son of Man came to seek and to save what was lost.” As Ken Heer (2007: 252) observes, while people speak of “finding the Lord,” salvation ultimately raises the question of who finds whom: although Zacchaeus sought to see Jesus, it was Jesus who first saw him and discerned his deeper need. Highlighting this redemptive vision, Michael Mullins (2010: 415) notes that “today” signals the decisive kairos of salvation, while “must” (dei) indicates the necessary fulfillment of God’s plan, unfolding precisely as Jesus dines in Zacchaeus’s house (Mullins, 2010: 415).
In all three cases (Exo 3; Gen 16; Luke 19), God’s immanent gaze draws people into a personal relationship with Him. With Hagar, the encounter is mutual, “He has seen her; she has seen him” (Goldingay, 2020: 269). For Israel, the relationship is so intimate that God calls them “my people,” reflecting a deeply personal bond grounded in His own relational nature (Ryken, 2005: 84). Likewise, Jesus’ decision to stay and share a meal with Zacchaeus and his household signifies genuine relational embrace (Luke 19:5).
Taken together, Vietnamese religions exhibit a developmental progression in their understanding of Ông Trời, in which divine revelation appears increasingly fulfilled. This movement advances from acknowledging an inaccessible gazer to encountering the immanent God who saves. Philosophically and theologically, the Divine Eye thus shifts from moral surveillance to salvific vision, moving from an abstract principle toward a concrete, incarnate figure who sacrifices for humanity, including the Vietnamese.
Missional implications
“Heaven has eyes” is a familiar expression of cosmic morality within the Three Teachings, while Caodaists affirm the Supreme Being above all. For Vietnamese Christians, however, the Divine Eye carries further significance, particularly for interfaith dialogue and for shaping a culturally grounded missional approach.
First, the preceding discussion suggests that, metaphorically, Vietnamese deities share the same eyes. Across the Three Teachings, indigenous traditions such as Caodaism, and even Christianity, God is understood as “the One who sees.” It is therefore inappropriate for Vietnamese Christians to regard followers of other religions with condescension. As Muck (2021: 139) notes, Christian descriptions of other religions often reveal attitudes at odds with professed theological respect, frequently reducing them to labels such as “pagan,” “superstitious,” or “primitive.” Such language reflects a recurring “West is best” posture, evident both in whose voices are privileged and in how other traditions are portrayed.
Instead, Muck (2021: 139) advocates a “dialogical discourse” in which Christians approach other faiths with respect, humility before the mystery of God’s purposes, and unwavering commitment to their own convictions. Vietnamese Christians, therefore, need not choose between faithfulness and dialogue; they can hold firmly to their beliefs while engaging others meaningfully to discern God’s revelation across Vietnamese religions.
Second, the saying “Heaven has eyes” affirms that God watches over and cares for all people, regardless of status, gender, age, or place. As Scripture attests, “The Lord is good to all; he has compassion on all he has made” (Psalm 145:9). The recurring theme of divine watchfulness across Vietnamese religions suggests that God’s love for the Vietnamese is not contingent on their becoming Christians but flows from His very nature, for “God is love” (1 John 4:8).
Missiologically, this insight calls the Evangelical church in Vietnam to reorient its engagement with non-Christians. Christian mission should be driven foremost by God’s compassionate care for all people, rather than by conversion alone, aligning outreach with the character of the God who sees, cares, and graciously extends love to all.
Third, the Divine Eye signifies God’s goodness, moral integrity, and opposition to evil, grounding Vietnamese concepts of justice and ethics in God Himself. This conviction encourages believers to place their hope in the God who continually watches over human life. Across Vietnamese religions, followers are urged to persevere until the day when Ông Trời renders impartial judgment, a theme echoed in Scripture: “Inasmuch as He hath appointed a day in which he will judge the world in righteousness” (Acts 17:31). For the socially oppressed, religiously marginalized, or physically afflicted, this vision sustains hope, for “there is no iniquity with Jehovah our God, nor respect of persons, nor taking of bribes” (2 Chr 19:7).
Finally, a comparative reading of Vietnamese religions shows that the saying “Heaven has eyes” develops from moral causality into the portrayal of a divine figure who sees, incarnates, and redeems. Understood within an ongoing revelation, Muck (2021: 145) argues that this progression participates in God’s broader self-disclosure to humanity, a story that includes non-Christian religions. These traditions are not erased by Christianity but brought to fulfillment in Jesus Christ. Thus, Vietnamese believers may encounter a transformative relationship with the God who had already revealed His watchful care within their original faith traditions.
Footnotes
Acknowledgements
I appreciate the constructive feedback offered by Dr. Stephen Bailey in the Intercultural Studies program at Asbury Theological Seminary.
Funding
The author received no financial support for the research, authorship, and/or publication of this article.
Declaration of conflicting interests
The author declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.