Leviticus 17:11-14

For the life of the flesh is in the blood; and I have given it to you upon the altar to make atonement for your souls: for it is the blood that maketh atonement by reason of the life. Therefore I said unto the children of Israel, No soul of you shall eat blood, neither shall any stranger that sojourneth among you eat blood. And whatsoever man there be of the children of Israel, or of the strangers that sojourn among them, who taketh in hunting any beast or bird that may be eaten; he shall pour out the blood thereof, and cover it with dust. For as to the life of all flesh, the blood thereof is all one with the life thereof: therefore I said unto the children of Israel, Ye shall eat the blood of no manner of flesh; for the life of all flesh is the blood thereof: whosoever eateth it shall be cut off.