Here are the assumptions of the East that I simply don’t understand. It seems to me that the Eastern mind (at least as represented here) is that human nature itself consists of corruption.

Otherwise, the objection that Mary having an unfallen human nature makes her “of a different nature from us” makes no sense. In fact, human nature in its
natural state is perfect, unfallen, because God did not make it fallen or disordered. Our fallenness is not part of our nature but a disorder/corruption of human nature.
Christ was Adam- he needed to take Adam’s place as the centre of humanity. Possessing perfect human nature does not make him “of a different nature” because that would be tantamount to saying that human nature is properly sinful! Like I like to say, God did not mix in sin along with the dust & breath of life when he made Adam- Fallenness is not part of our nature. Saying that Christ and Mary having unfallen natures like Adam & Eve makes them of a different nature is a false objection to the doctrine of IC.
You see this paragraph by constantine represents perfectly the western theology, but somehow Easterns think that it’s incompatible with our theology :shrug:Everything here is perfectly taught in the western understanding. It certainly is
not contingent on holding that Christ & Mary had fallen human natures. :nope: In fact, I believe that in the West, holding that
Christ had a fallen human nature, that he experienced temptations of the flesh and lust etc is tantamount to blasphemy.