3You shall not do according to the people of the land of Mizraim in which you dwelt, nor after the works of the people of the land of Kenaan, whither I am bringing you, shall you do, neither shall you walk in their laws.
4My judgments shall you perform and keep My statutes to walk in them; I am the Lord your God.
5And you shall keep My statutes and My judgments, which if a man do he shall live by them an everlasting life. I am the Lord.
6No man shall come nigh to any of his own flesh to uncover the nakedness; I am the Lord.
Leviticus 18
Leviticus 18:3-6