Theosis (also deification or divinization) is the Christian understanding that human beings, through grace and participation in Christ, are transformed into the likeness of God and called to union with the divine life. It is not absorption into God or loss of human identity, but rather the perfection of the human person through theandric (God-human) communion, initiated in this life and completed in eternity.
From Greek *theōsis* (θέωσις), literally 'deification' or 'making divine,' derived from *theos* (God) and the suffix *-osis* (a process or state). The term appears prominently in the Greek Church Fathers, especially Athanasius (4th century) and the Cappadocian Fathers, and is central to Eastern Orthodox theology.
Moksha or Brahman-realization — Liberation through the realization of one's true nature as non-distinct from Brahman (ultimate reality). While Advaita emphasizes non-duality in a way theosis does not, both traditions understand spiritual maturation as union with the transcendent, though the metaphysics and anthropology differ.
Fanā or Tawhīd — The annihilation of the ego-self in God and unitive knowledge of divine oneness. Like theosis, it preserves human personhood while describing radical transformation and intimacy with the divine, though Islamic theology guards strictly against the language of 'deification.'
Buddha-nature or Buddhahood — The awakening to one's inherent Buddha-nature and potential for Buddhahood through practice. While the metaphysical frameworks differ (absence of a creator God), both traditions envision the human person realizing a transcendent mode of being.
Devekuth (Cleaving) — The soul's cleaving to or unification with God, achieved through contemplative practice and observance. Like theosis, it is understood as intimate communion rather than loss of self, though grounded in Torah and rabbinic tradition.
A Christian seeking theosis today participates in the sacramental life of the Church—especially the Eucharist—as a means of real communion with Christ; cultivates virtue and ascetic practice (prayer, fasting, almsgiving) that conform the will to God's; and gradually recognizes that transformation is not achievement but gift, received through grace. The lived experience is one of increasing love, clarity, and freedom from self-centeredness, a deepening sense that 'it is no longer I who live, but Christ who lives in me' (Galatians 2:20).
Is Theosis the same as becoming God?
No. Theosis means participation in God's divine life and attributes (love, holiness, eternity) through grace, not becoming God in essence or replacing one's humanity. The human person remains human; the divine life is given to the human as a gift, and the self is perfected, not erased.
Is Theosis taught in Western Christianity?
Theosis is the primary language of Eastern Orthodox theology and is explicit in the Church Fathers. Western Christianity (Catholic and Protestant) emphasizes sanctification and glorification but has largely used different terminology; however, the underlying reality—transformation into Christ's likeness—is present throughout Christian tradition.
How is Theosis different from salvation or justification?
Justification (declared righteousness before God through Christ) is the beginning; theosis is the ongoing process and goal of the Christian life—the actual transformation of the person into holiness and union with God. All are stages or dimensions of salvation understood as healing and restoration of the human-divine relationship.
One Source Sangha is a community for seekers of every tradition — with daily practice, teachings, and Ananda, a companion to walk beside you. Free to join.
Join the Sangha — Free