And the LORD spoke to Moses, saying,  “Speak to the people of Israel and say to them, I am the LORD your God.  You shall not do as they do in the land of Egypt, where you lived, and you shall not do as they do in the land of Canaan, to which I am bringing you. You shall not walk in their statutes.  You shall follow my rules and keep my statutes and walk in them. I am the LORD your God.  You shall therefore keep my statutes and my rules; if a person does them, he shall live by them: I am the LORD.”

Leviticus 18.1-5