Leviticus 20:19-21

New International Version - UK

¹⁹ ‘“Do not have sexual relations with the sister of either your mother or your father, for that would dishonour a close relative; both of you would be held responsible.

²⁰ ‘“If a man has sexual relations with his aunt, he has dishonoured his uncle. They will be held responsible; they will die childless.

²¹ ‘“If a man marries his brother’s wife, it is an act of impurity; he has dishonoured his brother. They will be childless.