Deuteronomy 27:20

20 God's curse on anyone who has sex with his father's wife; he has violated the woman who belongs to his father. All respond: Yes. Absolutely.

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 God's curse on anyone who misdirects a blind man on the road. All respond: Yes. Absolutely.

19 God's curse on anyone who interferes with justice due the foreigner, orphan, or widow. All respond: Yes. Absolutely.

20 God's curse on anyone who has sex with his father's wife; he has violated the woman who belongs to his father. All respond: Yes. Absolutely.

21 God's curse on anyone who has sex with an animal. All respond: Yes. Absolutely.

22 God's curse on anyone who has sex with his sister, the daughter of his father or mother. All respond: Yes. Absolutely.