>>So Christ is an it?<<
I don’t know what you mean. Are you suggesting that the identity of my earthly father and mother are relevant in eternity? The importance of Mary as Jesus’ mother is relevant only in this life, not in eternity.
Christ says, that we will neither give or be given in marriage in heaven.
He does not say that we will cease to become men and women. For some of us it means leaving these decrepit bodies behind and getting a new one that works right.