Eusebius on Christ Deifying Humanity
Now it was actually the case that the
whole Humanity was absorbed by the Divinity, and moreover the Word of God was
God as He had previously been man, and He deified humanity with Himself, being
the firstfruits of our hope, since He thought actual manhood worthy of eternal
life with Him, and of fellowship in the blessed Godhead, and afforded to us all
equally this mighty proof of an immortality and kingdom with him. (Eusebius,
The Proof of the Gospel, Book IV chapter 14)