Leviticus 17:10

Eat blood. To eat blood, was forbidden in the law; partly because God reserved it to himself to be offered in sacrifices on the altar, as to the Lord of life and death; and as a figure of the blood of Christ; and partly to give men a horror of shedding blood, Genesis ix. 4, 5, 6. (Challoner) --- Some barbarians feast on human blood. The Massagetes drunk the blood of horses, and the Gelonians of Pontus mixed it with milk. (Georg. iii. 463.) If the Hebrews did any such thing, and it became public, they were put to death. But if it remained private, God threatens to take vengeance himself of their cruelty and disobedience. The face often denotes anger.