Heb 10:4 For it is not possible that the blood of bulls and of goats should take away sins.5 Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
When did Christ, as God, come into this world?
Answer: At the incarnation.
What was prepared for the Deity of Christ?
Answer: A body
What body came from Mary's womb?
A body indwelt with our "bent-to-self". A body indwelt with "the love of self".
If not, then Mary's womb was cleansed from results of the fall. But Christ did come to save those before the fall, but after. Hence He united His Deity to our fallen life and in that life lived a perfect life and at the cross that life took the curse of the law.
Hence, by faith, we can say that "in Christ" I was made obedient to God's law and "in Christ" I died the death the law required. Hence I stand justified by faith in the doing and dying of Christ. Amen!