[svieira]

> But to be entirely human is to be corrupted by original sin, doomed to judgement and eternal separation from God.

This is false, fortunately. "Human" and "sin" are not necessary to each other. Sin is not natural to man. The gift of original justice could not be passed on from Adam to his children because he threw it away. This lack of a gift is what is called "original sin" and its effects include all of the disordered expressions we find ourselves inclined to from birth. But this lack of a gift is not necessary to being human.

Which allows God to take on human nature without being in the state of sin ("like us in all things but sin"), but accepting the punishment for sin (death) to redeem us and offer a new gift of mercy that restores the original gift of justice for those who accept it. Since God is outside of time, He can even give the fruits of that gift "before" that gift is realized in time (Elijah, Mary).