The Anchoress writes of the good sense derived from doctrines that make little sense to those who decide not to go deeper about Mary the Mother of God:
Whenever my younger son is particularly happy he lets out with a dazzling grin and it always thrills me, because I recognize therein my grandmother’s smile. She died when I was ten years old, but practically at the moment of his birth, I recognized her distinctive mouth and smile in him. I frequently marvel at the fact that I see in him something of a person he never knew, and that in my grandmother, I’d been seeing a feature that likely belonged to some wild Scot that she herself never knew.
Just as our actions ripple outward in ways we do not imagine, so too we physically travel on, in bits and pieces, so far beyond ourselves.
When studying Anatomy and Physiology in college, the lesson that briefly discussed fetomaternal microchimerism, became instructive to me on a different level. Learning that every child leaves within his mother a microscopic bit of himself — and that it remains within her forever — the dogma of the Immaculate Conception instantly became both crystal clear and brilliant to me.
Mary, then, was indeed a tabernacle within which the Divinity did reside — not for a limited time, but for all of her life. Understanding this (and considering how the churches seemed to get it ‘way before microscopes told us anything) the Immaculate Conception made and makes perfect sense: God, who is All-Good is also completely Pure; the vessel in which He resides, then, must be pure, too, or it would not be able to sustain all of that “light in which we see light itself.”
Microchimerism also relates to the dogma of the Assumption of Mary, as well. In the psalms we read “you will not suffer your beloved to undergo corruption.” Christ’s divine body did not undergo corruption. It follows that his mother’s body, which contained a cellular component of the Divinity — and a particle of God is God, entire — would not be allowed to become corrupt, either.
It sounds so simple, doesn’t it? It is that simple, and of course, that complicated.
Do read all of it. It may not convince you to think differently about Mary but it will educate you as to why many Catholics do.