Leviticus 11:29

“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;

Then Noah built an altar to Yahweh and took of every clean animal and of every clean bird and offered burnt offerings on the altar.

‘Or a person who touches any unclean thing, whether a carcass of an unclean beast or the carcass of unclean cattle or a carcass of unclean swarming things—though it is hidden from him, yet he is unclean—will be guilty.

‘Now every swarming thing that swarms on the earth is detestable; it shall not be eaten.

‘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.

“These are the animals which you may eat: the ox, the sheep, the goat,

since they relate only to food and drink and various washings, requirements for the body imposed until a time of reformation.