Irenaeus
[T]he Word became flesh and the Son of God became the Son of Man: so that man, by entering into communion with the Word and thus receiving divine sonship, might become a son of God.
C.S. LewisNow the whole offer which Christianity makes is this: that we can, if we let God have His way, come to share in the life of Christ. If we do, we shall then be sharing a life which was begotten, not made, which always existed and always will exist. Christ is the Son of God. If we share in this kind of life we also shall be sons of God. We shall love the Father as He does and the Holy Ghost will arise in us. He came to this world and became a man in order to spread to other men the kind of life He has — by what I call “good infection.” Every Christian is to become a little Christ. The whole purpose of becoming a Christian is simply nothing else.
Maximus the ConfessorLet us become the image of the one whole God, bearing nothing earthly in ourselves, so that we may consort with God and become gods, receiving from God our existence as gods.
C.S. LewisHe wants them to learn to walk and must therefore take away His hand; and if only the will to walk is really there He is pleased even with their stumbles. Do not be deceived, Wormwood. Our cause is never more in danger than when a human, no longer desiring, but still intending, to do our Enemy’s will, looks round upon a universe from which every trace of Him seems to have vanished, and asks why he has been forsaken, and still obeys.
Do we cast blame on him [God] because we were not made gods from the beginning, but were at first created merely as men, and then later as gods? Although God has adopted this course out of his pure benevolence, that no one may charge him with discrimination or stinginess, he declares, “I have said, ye are gods; and all of you are sons of the Most High.” . . .
If the Word became a man, it was so men may become gods.
Our Lord Jesus Christ . . . became what we are, so that He might bring us to be even what He Himself is.
How, then, shall he become a God, who has not as yet been made a man? Or how can he be perfect who was but lately created? How, again, can he be immortal, who in his mortal nature did not obey his maker? For it must be that thou, at the outset, shouldest hold the rank of a man, and then afterwards partake of the glory of God.