Leviticus 11:43-47

⁴³Do not defile your souls, nor touch aught thereof, lest you be unclean,

⁴⁴For I am the Lord your God: be holy because I am holy. Defile not your souls by any creeping thing, that moveth upon the earth.

⁴⁵For I am the Lord, who brought you out of the land of Egypt, that I might be your God.

⁴⁶You shall be holy, because I am holy. This is the law of beasts and fowls, and of every living creature that moveth in the waters, and creepeth on the earth:

⁴⁷That you may know the differences of the clean, and unclean, and know what you ought to eat, and what to refuse.