Deuteronomy 27:20

20 "A man will be cursed who has sexual relations with his father's wife, because it is a dishonor to his father." Then all the people will 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 "Anyone will be cursed who sends a blind person down the wrong road." Then all the people will say, "Amen!"

19 "Anyone will be cursed who is unfair to foreigners, orphans, or widows." Then all the people will say, "Amen!"

20 "A man will be cursed who has sexual relations with his father's wife, because it is a dishonor to his father." Then all the people will say, "Amen!"

21 "Anyone will be cursed who has sexual relations with an animal." Then all the people will say, "Amen!"

22 "A man will be cursed who has sexual relations with his sister, whether she is his father's daughter or his mother's daughter." Then all the people will say, "Amen!"