Leviticus 17

10-12 "If any Israelite or foreigner living among them eats blood, I will disown that person and cut him off from his people, for the life of an animal is in the blood. I have provided the blood for you to make atonement for your lives on the Altar; it is the blood, the life, that makes atonement. That’s why I tell the People of Israel, ‘Don’t eat blood.’ The same goes for the foreigner who lives among you, ‘Don’t eat blood.’