Theosis in Athanasius

Deification (theopoiesis) is the integrating theme of Athanasius’ theology — the lens through which his Christology, his pneumatology, and his polemic against Arianism all come into focus. Inheriting the “wonderful exchange” from Irenaeus and giving it its most famous formula, Athanasius teaches that the Word became human so that humans might be made divine: not by becoming God in essence, but by participation, adoption, and incorruption. This file traces what deification does and does not mean in Athanasius, and points forward to the later essence-energies clarification that secured it against misunderstanding.

Tradition: Pan-Orthodox (Church Father)

The Exchange Formula and Its Lineage

The structuring idea of Athanasian soteriology is the admirabile commercium, the “wonderful exchange”: the Son takes what is ours so as to give us what is his. Its classic patristic ancestor is St. Irenaeus of Lyon, who wrote that the Word of God “did, through his transcendent love, become what we are, that he might bring us to be even what he is himself” (Irenaeus, Against Heresies V, preface; trans. ANF 1). Irenaeus grounds this in recapitulation: Christ “summed up” the whole of human nature in himself to heal it from within.

Athanasius receives this lineage and crystallizes it in the most quoted sentence in the entire literature of deification, from the conclusion of On the Incarnation:

“He became man that we might be made God” (Autos gar enenthropesen, hina hemeis theopoiethomen) — Athanasius, On the Incarnation 54.3 (trans. NPNF II/4; cf. Behr, PPS 44b).

The same logic recurs throughout the Orations against the Arians: “the Word was made flesh in order… that we, partaking of his Spirit, might be deified” (Athanasius, Contra Arianos 2.70); the Son became a son of man “that he might make us sons of God” and “make men gods” (Contra Arianos 1.38–39; 3.34). The formula is not a rhetorical flourish but the keystone of his anti-Arian argument: only if the Word is truly God by nature can his incarnation actually deify; a creature could not make creatures divine. Soteriology demands the homoousion (cross-link Letters to Serapion, where the same logic is applied to the Spirit).

What Deification Means in Athanasius

Athanasius’ deification is participatory and relational, never an absorption into the divine essence. Three terms map its content:

  • Participation (metousia / metoche). We become “partakers of the divine nature” (2 Peter 1:4) by sharing in the Word through the Spirit. Crucially, the Word is the divine nature and gives participation in himself; we receive and partake. Athanasius marks the asymmetry sharply: the Son is what the Father is by nature; we become what we become by grace and gift (Athanasius, Contra Arianos 1.9; 3.19–20; Anatolios, Athanasius, on participation).
  • Adoption (huiothesia). Deification is sonship by grace. The Word is Son by nature (physei); we are made sons by adoption, “receiving the Spirit of the Son” so that we can cry “Abba, Father” (Romans 8:15). The natural sonship of the Logos is the ground and pattern of our adoptive sonship, and the two are never confused (Athanasius, Contra Arianos 2.59; 1.37–39).
  • Incorruption (aphtharsia) and life. Because the immortal Word united himself to mortal flesh, death is swallowed up by life and corruption by incorruption; the deified human shares Christ’s incorruption and resurrection-life (Athanasius, On the Incarnation 8–9, 54). Deification for Athanasius is therefore inseparable from the conquest of death — it is the gift of immortal, incorruptible life in communion with God.

What Deification Does Not Mean

Athanasius is emphatic that theopoiesis is not the confusion of the human with the divine essence, not apotheosis into a second God, not a change of natures. The deified do not cease to be creatures; they do not acquire the Word’s natural sonship; they do not become uncreated. The whole anti-Arian polemic depends on this: if creatures could be “gods” by nature, the line between Creator and creature would blur — but precisely because we become gods only by participation and grace, the Word who deifies must himself be God by nature, on the other side of that line (Athanasius, Contra Arianos 3.19; 1.9). Deification names a real communion, not an ontological merger.

Athanasius works mostly with the language of participation without the later technical apparatus that would specify exactly what in God we participate in. He says we partake of God, of the Word, of the Spirit — and that we do not partake of the divine essence as the Son does — but he does not yet articulate the precise metaphysical distinction that protects the claim.

The Later Essence-Energies Clarification

That clarification belongs to the later tradition, above all to St. Gregory Palamas in the fourteenth century, who distinguished between the unknowable, imparticipable divine essence (ousia) and the uncreated divine energies (energeiai) in which the deified truly participate. The Palamite distinction makes explicit and safe what Athanasius held implicitly: that real participation in God (against any agnostic reduction) need not mean participation in God’s very essence (against any pantheist confusion). What Athanasius secured Christologically — that deification is by grace, not by nature — Palamas secures metaphysically, locating the how of participation in the energies (cross-link Orthodoxy: Theosis and St. Gregory Palamas: The Distinction). Athanasius is thus the great Christological foundation on which the mature Orthodox doctrine of deification is built.

Texts

The doctrine is concentrated in three bodies of text:

  • On the Incarnation, especially 54 (the exchange formula) and chapters 8–9 (incorruption through the Word’s assumption of flesh) — the foundational statement (Athanasius, On the Incarnation 54 [PG 25:192B]; trans. Behr, PPS 44b).
  • Orations against the Arians (Contra Arianos), where deification is woven into the defense of the Son’s full divinity — 1.37–39; 2.59, 2.70; 3.19–20, 3.33–34 — showing that soteriology requires the consubstantial Son (Athanasius, Contra Arianos 1–3; trans. NPNF II/4).
  • Letters to Serapion, which extend the same logic to the Spirit: it is by participation in the Spirit that we are made partakers of God and deified, so the deifying Spirit cannot be a creature (Athanasius, Letters to Serapion 1.22–1.25; trans. DelCogliano–Radde-Gallwitz–Ayres, Works on the Spirit, PPS 43).

The unity of these three is the unity of Athanasius’ whole theology: Father, Son, and Spirit are one God by nature precisely because salvation is the deification of the creature, and only God can make a creature divine.

See Also

References

  • Athanasius of Alexandria. On the Incarnation (De Incarnatione). Translated by John Behr. Popular Patristics Series 44b. Yonkers, NY: St. Vladimir’s Seminary Press, 2011.
  • Athanasius of Alexandria. Orations against the Arians (Contra Arianos). Translated in NPNF II/4 (Schaff and Wace, eds.).
  • Athanasius of Alexandria. Letters to Serapion on the Holy Spirit. In Works on the Spirit, trans. Mark DelCogliano, Andrew Radde-Gallwitz, and Lewis Ayres. Popular Patristics Series 43. Yonkers, NY: St. Vladimir’s Seminary Press, 2011.
  • Irenaeus of Lyon. Against Heresies (Adversus Haereses). Translated in ANF 1.
  • Anatolios, Khaled. Athanasius: The Coherence of His Thought. London: Routledge, 1998; and Athanasius (The Early Church Fathers). London: Routledge, 2004.
  • Behr, John. The Nicene Faith. Formation of Christian Theology, vol. 2. Crestwood, NY: St. Vladimir’s Seminary Press, 2004.
  • Russell, Norman. The Doctrine of Deification in the Greek Patristic Tradition. Oxford: Oxford University Press, 2004.