Leviticus 18:3-6

³You may not do those things which were done in the land of Egypt where you were living; and you may not do those things which are done in the land of Canaan where I am taking you, or be guided in your behaviour by their rules.

⁴But you are to be guided by my decisions and keep my rules, and be guided by them: I am the Lord your God.

⁵So keep my rules and my decisions, which, if a man does them, will be life to him: I am the Lord.

⁶You may not have sex connection with anyone who is a near relation: I am the Lord.