Deuteronomy 14:5

“You shall take with you of every clean animal by sevens, a male and his female; and of the animals that are not clean, two, a male and his female;

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

‘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.

“However, you may sacrifice and eat meat within any of your gates, whatever you desire, according to the blessing of Yahweh your God which He has given you; the unclean and the clean may eat of it, as of the gazelle and the deer.

“Do you know the time the mountain goats give birth? Do you keep watch over the calving of the deer?

Your sons have fainted; They lie helpless at the head of every street, Like an antelope in a net, Full of the wrath of Yahweh, The rebuke of your God.

But Peter said, “By no means, Lord, for I have never eaten anything defiled and unclean.”