Leviticus 20:19-21 NIV

19 " 'Do not have sexual relations with the sister of either your mother or your father,1 for that would dishonor a close relative; both of you would be held responsible.

References for Leviticus 20:19

20 " 'If a man sleeps with his aunt,2 he has dishonored his uncle. They will be held responsible; they will die childless.3

References for Leviticus 20:20

21 " 'If a man marries his brother's wife,4 it is an act of impurity; he has dishonored his brother. They will be childless.5

References for Leviticus 20:21