Leviticus 18:5-7

King James Version

⁵ Ye shall therefore keep my statutes, and my judgments: which if a man do, he shall live in them: I am the Lord.

⁶ None of you shall approach to any that is near of kin to him, to uncover their nakedness: I am the Lord.

⁷ The nakedness of thy father, or the nakedness of thy mother, shalt thou not uncover: she is thy mother; thou shalt not uncover her nakedness.