3After the doings of the Land of Egypt, wherein ye have dwelt, shall ye not do; and after the doings of the land of Canaan whither I am bringing you, shall ye not do; and in their customs shall ye not walk.
4My ordinances shall ye do, and my statutes shall ye keep, to walk therein: I am the Lord your God.
5And ye shall keep my statutes, and my ordinances, which if a man do, he shall live in them: I am the Lord.
6None of you shall approach to any that are near of kin to him, to uncover their nakedness: I am the Lord.
Leviticus 18
Leviticus 18:3-6