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Divine and human. No blood can be manufactured in an unfertilized egg, and no blood ever passes from the mother to the baby through the placenta. When the egg is fertilized, that is when the fetus will begin to make blood. So it's the father that contributes the life to the egg.
Hebrews 2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same
Hebrews 2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same