What was God to do in face of this dehumanising of mankind, this universal hiding of the knowledge of Himself by the wiles of evil spirits? Was He to keep silence before so great a wrong and let men go on being thus deceived and kept in ignorance of Himself? If so, what was the use of having made them in His own Image originally? It would surely have been better for them always to have been brutes, rather than to revert to that condition when once they had shared the nature of the Word. Again, things being as they were, what was the use of their ever having had the knowledge of God? Surely it would have been better for God never to have bestowed it, than that men should subsequently be found unworthy to receive it. Similarly, what possible profit could it be to God Himself, Who made men, if when made they did not worship Him, but regarded others as their makers? This would be tantamount to His having made them for others and not for Himself.
Even an earthly king, though he is only a man, does not allow lands that he has colonized to pass into other hands or to desert to other rulers, but sends letters and friends and even visits them himself to recall them to their allegiance, rather than allow His work to be undone. How much more, then, will God be patient and painstaking with His creatures, that they be not led astray from Him to the service of those that are not, and that all the more because such error means for them sheer ruin, and because it is not right that those who had once shared His Image should be destroyed.
What, then, was God to do? What else could He possibly do, being God, but renew His Image in mankind, so that through it men might once more come to know Him? And how could this be done save by the coming of the very Image Himself, our Savior Jesus Christ? Men could not have done it, for they are only made after the Image; nor could angels have done it, for they are not the images of God. 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.
[St. Athanasius the Great, On the Incarnation of the Word (De Incarnatione Dei Verbi), Chapter 3, 13]