Deuteronomy 27:20

20 "'A curse on anyone who has sexual relations with his father's wife, because he has violated his father's rights.'All the people are to say, 'Amen!'

Deuteronomy 27:20 Meaning and Commentary

Deuteronomy 27:20

Cursed [be] he that lieth with his father's wife
As Reuben did, and which is forbidden ( Leviticus 18:8 ) ; because he uncovereth his father's skirt;
see ( Deuteronomy 22:30 ) ; and all the people shall say Amen;
the tribe of Reuben said this as well as the rest.

Deuteronomy 27:20 In-Context

18 "'A curse on anyone who causes a blind person to lose his way on the road.'All the people are to say, 'Amen!'

19 "'A curse on anyone who interferes with justice for the foreigner, orphan or widow.'All the people are to say, 'Amen!'

20 "'A curse on anyone who has sexual relations with his father's wife, because he has violated his father's rights.'All the people are to say, 'Amen!'

21 "'A curse on anyone who has sexual relations with any kind of animal.' All the people are to say, 'Amen!'

22 "'A curse on anyone who has sexual relations with his sister, no matter whether she is the daughter of his father or of his mother.'All the people are to say, 'Amen!'