Read: Leviticus 20
I am the Lord your God, who has set you apart from the nations. You must therefore make a distinction between clean and unclean animals and between unclean and clean birds. Do not defile yourselves by any animal or bird or anything that moves along the ground — those that I have set apart as unclean for you. You are to be holy to me because I, the Lord, am holy, and I have set you apart from the nations to be my own. Lev 20:24b-26
Note how carefully God identifies himself with each one of these instructions. He signs his name, as it were, after each one. He gives us a practical admonition and then says, I am the LORD your God. The name he uses here is his covenant name: I am Jehovah. That is, I am the Living One, the Eternal One, the Sufficient One. I am the God who is Enough. That is what Jehovah means.
What is God trying to impart to us by this format? Two things are involved. The first is authority. This underscores something very important. It is that we must discover how to distinguish between right and wrong, truth and error, on the basis of what God says — if we are in relationship to him. There is a different standard for the people of God.