@Romeo Fabulini,
Try to understand this simplified timeline:
Understanding the sanctity of blood goes all the way back to Abel. His sacrifice was one of blood while Cain's was not. Perhaps he understood that the prophecy regarding the bruising of the Serpent's head required life to be taken. Remember that God told Cain his brothers blood "cried out from the ground."
Genesis 9:5 Further restates the importance of blood, indicating the life, or soul, to be in the blood. This is before the Mosaic Law.
But the principle was stated again in the Law.
Quote:(Leviticus 17:11) . . .For the soul of the flesh is in the blood, and I myself have put it upon the altar for YOU to make atonement for YOUR souls, because it is the blood that makes atonement by the soul [in it].
Jesus' shed blood is an important element in the New Covenant
And after Jesus fulfilled the Law, the blood principle was restated by Paul as binding on Christians:
Quote:(Acts 15:19, 20) . . .Hence my decision is not to trouble those from the nations who are turning to God, 20 but to write them to abstain from things polluted by idols and from fornication and from what is strangled and from blood. . .
Christians were not relieved as they were from the prohibition against eating bacon, for example. So, there's no getting around the prohibition against blood.