Deuteronomy 14:21

and you shall be to Me a kingdom of priests and a holy nation.’ These are the words that you shall speak to the sons of Israel.”

“You shall bring the choice first fruits of your ground into the house of Yahweh your God. “You shall not boil a young goat in the milk of its mother.

“Speak to the sons of Israel, saying, ‘These are the creatures which you may eat from all the animals that are on the earth.

‘He too, who eats some of its carcass shall wash his clothes and be unclean until evening, and the one who picks up its carcass shall wash his clothes and be unclean until evening.

“And when any person eats an animal which dies or is torn by beasts, whether he is a native or a sojourner, he shall wash his clothes and bathe in water and remain unclean until evening; then he will become clean.

‘You are therefore to separate between the clean animal and the unclean, and between the unclean bird and the clean; and you shall not make yourselves detestable by animal or by bird or by anything that creeps on the ground, which I have separated for you as unclean.

“For you are a holy people to Yahweh your God; Yahweh your God has chosen you to be a people for His own treasured possession out of all the peoples who are on the face of the earth.

“The priests shall not eat any bird or beast that has died of itself or has been torn to pieces.