Leviticus 11:44-47

I am the LORD your God; consecrate yourselves and be holy, because I am holy. Do not make yourselves unclean by any creature that moves along the ground. I am the LORD, who brought you up out of Egypt to be your God; therefore be holy, because I am holy. “ ‘These are the regulations concerning animals, birds, every living thing that moves about in the water and every creature that moves along the ground. You must distinguish between the unclean and the clean, between living creatures that may be eaten and those that may not be eaten.’ ”