Leviticus 11:43-47

⁴³Ye shall not make your selves abominable with any creeping animal that creepeth, neither shall ye make yourselves unclean with them, that ye should be defiled by them.

⁴⁴For I am the LORD your God: ye shall therefore sanctify yourselves, and ye shall be holy; for I am holy: neither shall ye defile yourselves with any manner of creeping animal that creepeth upon the earth.

⁴⁵For I am the LORD that bringeth you out of the land of Egypt, to be your God: ye shall therefore be holy, for I am holy.

⁴⁶This is the law of the beasts, and of the fowl, and of every living creature that moveth in the waters, and of every creature that creepeth upon the earth;

⁴⁷To make a difference between the unclean and the clean, and between the beast that may be eaten and the beast that may not be eaten.