[And] why would God send His Word, Jesus Christ, to be held in an impure vessel?"
Doesn't Scripture tell us ALL who came after Adam and Eve are tainted with "original sin"? Even now...
Yes, Christ was indeed born of the flesh virgin Mary -- though NOT "conceived" through sin.
But what this says about Our Lord was that He is a man as well as God, as only a sinless man of the flesh could redeem us.
We can not know all the mysteries of God, but one can only refer to Scripture for support -- rather than "church tradition."
By that reasoning, that would make Jesus a sinner, since He was born after Adam and Eve. But we all know that can't be right.