Christ's blood is the price of salvation, the very life of the New and Everlasting Covenant. As we approach Christmas, it is worth asking whether Christ's precious blood ever mixed with Mary's or coursed through her veins.
First, let's examine an unborn baby's circulatory system.
In the way that God designed things, the blood of an unborn infant and that of the mother do not typically mix in utero. The baby's heart pushes his or her blood through his or her body, through the umbilical cord and to the placenta, but not beyond that. There is a membrane that separates the baby's blood from the mother's blood. Nutrients, oxygen, and waste are transferred through this membrane.
All that being said, the baby's blood and mother's blood does typically mix during birth. Usually, it's the child blood that enters the mother's blood. This is why couples with RH incompatibility are at risk since a mother's body can learn to attack incompatible blood.
So all that being said, it is almost certain that Christ's redemptive blood coursed through the veins of the Blessed Mother. Just in case you weren't 100% convinced of our Lady's prerogatives, here is one more subtle way in which Christ "honored his mother" in fulfillment of the Law.
You may also like: