Leviticus 18:17-19

New International Version - UK

¹⁷ ‘“Do not have sexual relations with both a woman and her daughter. Do not have sexual relations with either her son’s daughter or her daughter’s daughter; they are her close relatives. That is wickedness.

¹⁸ ‘“Do not take your wife’s sister as a rival wife and have sexual relations with her while your wife is living.

¹⁹ ‘“Do not approach a woman to have sexual relations during the uncleanness of her monthly period.