Leviticus 17:10-11

“And if any native Israelite or foreigner living among you eats or drinks blood in any form, I will turn against that person and cut him off from the community of your people, for the life of the body is in its blood. I have given you the blood on the altar to purify you, making you right with the LORD. It is the blood, given in exchange for a life, that makes purification possible.