Leviticus 18:16-18

The Voice

¹⁶ You are not to have sexual relations with your brother’s wife, your sister-in-law;^[a] you might as well violate your brother. ¹⁷ You are not to have sexual relations with a woman and her daughter, her son’s daughter, or her daughter’s daughter; they are blood relations. It would be a disgusting act. ¹⁸ As long as your wife is living, do not marry her sister or have sexual relations with her. This would make them rivals.