The incident in John 2:1 has also been quoted at times as Scriptural evidence that Mary was indeed human. Orthodox Christianity holds that she was cleansed of all sin at the Annunciation (her acceptance) and at her death.
If, as a human, she could be sinless all on her own, she would not be truly human. If she were made sinless from the moment of her conception, her holiness wouldn't be the supreme example of her humanity.
"If she were made sinless from the moment of her conception, her holiness wouldn't be the supreme example of her humanity."
Eve was sinless from the moment of her conception/creation - are you saying that her humanity was somehow deficient because of this?
The contrast between Eve and Mary surely lies in the fact that both were sinless yet one disobeyed, and the other had to undo the knot of the earlier disobedience by her faith and obedience?