Question: According to Science Digest, the mother’s blood never mingles with that of the fetus. With no contact with the mother’s blood, how can the blood of Jesus be “normal human blood”? If the blood of Mary didn’t mingle with Jesus’s blood, where does His blood come from?
Response: Your concern seems to center on the idea that Jesus somehow had “God blood,” in spite of the fact that God does not have blood. You ask, “If the blood of Mary didn’t mingle with Jesus’s blood, where does His blood come from?” Since His blood was part of His body, it must have come into existence in the same manner as His entire body. Did He have a “God body”? God doesn’t have a body, nor is there such a thing as “God blood.” God is not a man and does not inhabit a body of flesh and blood. You suggest that His blood must have come from God his Father or from the Holy Spirit, by whom He was conceived in Mary’s womb (Mt 1:20; Lk 1:35). The body “prepared” for Him (Heb:10:5) was created by God in Mary’s womb just as Adam’s was created by God in the Garden. Jesus is the “second man” and the “last Adam” (1 Cor:15:45,47). Did Adam have “God blood” and a “God body”? Then why would Christ? Christ’s body did not come into existence by either the Father or the Holy Spirit physically “fathering” Him. Neither the Father nor the Holy Spirit have bodies or blood, so they could not pass on through Mary either body or blood in the manner of a human father.
So, “How is Jesus’s blood unique from mankind yet the same?” We’re told that God sent His Son “in the likeness of sinful flesh.” Does that mean that His body wasn’t fully human? No. Christ’s body wasn’t part God and part human. The Scripture doesn’t say He was in the “likeness” of a human but not human. It says He was in the “likeness of sinful flesh” but without sin. Jesus was a real man of flesh and blood. Is the blood of Christ precious? Indeed, it is, because, like His entire body, Christ’s blood was without sin and was shed on the cross for our sins. He is “God manifest in the flesh,” but the flesh in which He was manifest was not “God flesh,” for there is no such thing. It was perfect, sinless, human flesh or He is not really man.