Leviticus 19:26

“However, flesh with its life, that is, its blood, you shall not eat.

‘Is not this the one from which my lord drinks and which he indeed uses to interpret omens? You have done evil in doing this.’”

‘And you shall not eat any blood, either of bird or animal, in any of your places of habitation.

“Only you shall not eat its blood; you are to pour it out on the ground like water.

“There shall not be found among you anyone who makes his son or his daughter pass through the fire, one who uses divination, one who practices soothsaying or one who interprets omens or a sorcerer,

So the people rushed greedily upon the spoil, and they took sheep and oxen and calves and slaughtered them on the ground; and the people ate them with the blood.

Then they told Saul, saying, “Behold, the people are sinning against Yahweh by eating with the blood.” And he said, “You have acted treacherously; roll a great stone to me today.”

Then they made their sons and their daughters pass through the fire, and practiced divination and omens, and sold themselves to do what is evil in the sight of Yahweh, provoking Him to anger.

He even made his son pass through the fire, practiced soothsaying and interpreted omens, and dealt with mediums and spiritists. He did much that was evil in the sight of Yahweh provoking Him to anger.

but that we write to them that they abstain from things contaminated by idols and from sexual immorality and from what is strangled and from blood.