17. “Do not have sexual relations with both a woman and her daughter. And do not take her granddaughter, whether her son’s daughter or her daughter’s daughter, and have sexual relations with her. They are close relatives, and this would be a wicked act.
18. “While your wife is living, do not marry her sister and have sexual relations with her, for they would be rivals.
19. “Do not have sexual relations with a woman during her period of menstrual impurity.