Leviticus 18:18 “Don’t marry your wife’s sister as a rival wife and have sex with her while your wife is living. Neither shalt thou take a wife to her sister, to vex her, to uncover her nakedness, beside the other in her life time. You shall not marry a woman in addition to her sister as a rival while she is alive, to uncover her nakedness. “ ‘While your wife is still living, you must not take her sister as another wife. Do not have sexual relations with her. And thou shalt not take a wife to her sister, to be a rival to her, to uncover her nakedness, besides the other in her life-time. “ ‘Do not take your wife’s sister as a rival wife and have sexual relations with her while your wife is living. Nor shall you take a woman as a rival to her sister, to uncover her nakedness while the other is alive. You shall not marry a woman in addition to her sister as a rival while she is alive, to uncover her nakedness. “While your wife is living, do not marry her sister and have sexual relations with her, for they would be rivals. And you shall not take a woman as a rival wife to her sister, uncovering her nakedness while her sister is still alive.