Faith

On the Incarnation

The Word of God became man so that we might become God.

Author

St. Athanasius the Apostolic

Archbishop of Alexandria · c. 296–373 AD · Pillar of the Faith

St. Athanasius, the 20th Pope of Alexandria, is one of the greatest theologians in Church history. He spent his life defending the full divinity of Christ against Arianism — earning the title Athanasius contra mundum ("Athanasius against the world"). His treatise On the Incarnation remains one of the most profound and enduring works of Christian theology, written when he was barely twenty years old.

The Heart of the Mystery

"He became what we are so that He might make us what He is."
— St. Athanasius, On the Incarnation

1 Creation, the Fall, and the Problem of Death

St. Athanasius begins by establishing that God created humanity out of pure love and goodness — not out of necessity. Humans were made in the image of the Word (Logos) and given a share in His own rational nature, enabling them to know God and live incorruptibly.

God's one condition was obedience: "Of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die" (Genesis 2:17). In disobeying, Adam and Eve did not merely break a rule — they began to dissolve back into the nothingness from which they had been called. Death, corruption, and the loss of the divine image became the inheritance of all mankind.

This created a profound dilemma for God: His goodness could not allow His creation to perish entirely, yet His truth demanded that the sentence of death stand. A simple word of forgiveness was not enough — corruption itself had to be undone.

2 Why the Word Became Flesh

Only the one who had originally created humanity could recreate it. Only the Word of God — through whom all things were made — could renew the divine image in man and reverse the sentence of death. This is why the eternal Son of God took on a human body: not because He needed to, but because we needed Him to.

St. Athanasius teaches that the Word assumed a human body born of the Virgin Mary — a body like ours in every way, yet without sin. By uniting the divine nature to human nature, He offered what no mere man could: a death that could pay the debt owed by all, and a life powerful enough to conquer the grave.

"The Word of God came in His own Person, because it was He alone, the Image of the Father, who could recreate man made after the Image."

3 The Death of the Word and the Destruction of Death

St. Athanasius explains that Christ did not die to satisfy an angry God, but to destroy death from within. By taking on a mortal body and dying in it, the immortal Word of God rendered death powerless. Death could not hold the Author of Life.

The Cross was not a defeat — it was the decisive battlefield on which death was slain. Christ surrendered His body to death voluntarily, so that in His body, death itself would be abolished. The Resurrection is the proof and the proclamation: corruption has been defeated, the divine image in man has been restored, and the way to eternal life has been opened.

"By the sacrifice of His own body He did two things: He put an end to the law of death which barred our way; and He made a new beginning of life for us, by giving us the hope of resurrection."

4 The Renewal of the Image of God in Man

St. Athanasius uses the analogy of a portrait: when a painting is defaced, the subject must sit again before the artist so that the image can be restored on the same material. In the same way, God did not discard ruined humanity — He came Himself, in the flesh, to renew His image upon it.

Through the Incarnation, the Word sanctified the human body, making it a temple of the divine. Through Baptism, Christians are united to this renewed humanity. Through the Eucharist, the faithful continually receive the Body and Blood of the Incarnate Word — and are thereby made partakers of the divine nature (2 Peter 1:4).

This is the foundation of the Coptic doctrine of theosis — deification: the human person, united to Christ, is gradually transformed into His likeness and drawn into the very life of the Holy Trinity.

5 Answering Objections — Jews and Greeks

St. Athanasius devotes a large portion of the treatise to answering the objections of his day. To the Jews, who stumbled at a crucified Messiah, he shows from the Hebrew Scriptures — Isaiah 53, Daniel 9, the Psalms — that the death and resurrection of the Christ were foretold. The cross is not a scandal but the fulfillment of prophecy.

To the Greeks, who found the idea of God becoming man philosophically absurd, he responds: if God's power fills the universe and governs it without being diminished or contained, why should it be impossible for the same Word to dwell in a human body? The Incarnation is not a limitation of God — it is an act of supreme condescension and love.

"The Savior of us all, the Word of God, in His great love took to Himself a body and moved as Man among men, meeting their senses, so to speak, halfway."

6 The Signs and Power of the Risen Christ

St. Athanasius closes with a powerful argument from experience: the evidence that Christ is risen and alive is visible in the world. The fear of death has been broken in those who trust in Him. Martyrs go to their deaths with joy. Virgins live in purity. Men who once worshipped idols now worship the true God.

These transformations — visible in the lives of ordinary Christians throughout the Roman world — are not the work of a dead teacher. They are the ongoing work of the living, risen Lord, present in His Church, active through His sacraments, drawing all people to Himself.

"A very strong proof of this destruction of death and its conquest by the cross is supplied by a present fact, namely this: all the disciples of Christ despise death; they take the offensive against it and, instead of fearing it, by the sign of the cross and by faith in Christ trample on it as on something dead."

Read the Full Text

On the Incarnation is one of the most important texts in all of Christian theology. Written around 318 AD, it is freely available in full. C.S. Lewis wrote the introduction to a modern English translation, calling it "a masterpiece."