Leviticus 18:7-9

Complete Jewish Bible

⁷ You are not to have sexual relations with your father, and you are not to have sexual relations with your mother. She is your mother — do not have sexual relations with her. ⁸ You are not to have sexual relations with your father’s wife; that is your father’s prerogative. ⁹ You are not to have sexual relations with your sister, the daughter of your father or the daughter of your mother, whether born at home or elsewhere. Do not have sexual relations with them.