Leviticus 18:6-8

New Catholic Bible

⁶ “ ‘None of you is to be intimate with any of your close relatives, to uncover their nakedness. I am the Lord. ⁷ You shall not uncover the nakedness of your father or your mother. She is your mother; you shall not uncover her nakedness. ⁸ You shall not uncover the nakedness of your father’s wife, for her nakedness is like your father’s own nakedness.