"I Make My Own the Voice": Theosis in the First Verse of the Gospel of John

 The Transfiguration, Rubens. Via  WikiCommons , CC0.

The Transfiguration, Rubens. Via WikiCommons, CC0.

In the beginning was the Word, and the Word was with God, and the Word was God. (John 1:1)

From Kanon for the Fifth Day of Great Week, Ninth Ode, by St. Cosmas of Maiuma:

The Father begot me, creative Wisdom, before the ages;
He established me as the beginning of his ways
For the works now mystically accomplished
For though I am the uncreated Word by nature,
I make my own the voice
Of the nature I have now assumed.

As I am a man
In reality, not a mirage,
So divinized is the nature which,
By the manner of the exchange,
Is united to me.
Wherefore know that I am one Christ
Who saves that of which and in which I am.

From Ancient Christian Commentary on Scripture, NT Vol. IVa, ed. Joel C. Elowsky, 5.

Update: A friend gave me some congenial pushback on my theosis claim - he suggested that this passage is specifically about the hypostatic union (that Christ is one person with two natures) and not about theosis, per se. I initially read this as, "So divinized is the nature (human nature in general) which, / By the manner of the exchange, / Is united to me." But he may be right.