Deuteronomy 27:20
Cursed is the one who has sexual relations with his father's former wife, for he dishonors his father.' Then all the people will say, 'Amen!'
Deuteronomy 22:30
A man may not marry his father's former wife and in this way dishonor his father.
Leviticus 18:8
You must not have sexual intercourse with your father's wife; she is your father's nakedness.
Leviticus 20:11
If a man has sexual intercourse with his father's wife, he has exposed his father's nakedness. Both of them must be put to death; their blood guilt is on themselves.
1 Corinthians 5:1
It is actually reported that sexual immorality exists among you, the kind of immorality that is not permitted even among the Gentiles, so that someone is cohabiting with his father's wife.
Genesis 35:22
While Israel was living in that land, Reuben had sexual relations with Bilhah, his father's concubine, and Israel heard about it. Jacob had twelve sons:
Genesis 49:4
You are destructive like water and will not excel, for you got on your father's bed, then you defiled it -- he got on my couch!
2 Samuel 16:22
So they pitched a tent for Absalom on the roof, and Absalom had sex with his father's concubines in the sight of all Israel.
1 Chronicles 5:1
The sons of Reuben, Israel's firstborn -- (Now he was the firstborn, but when he defiled his father's bed, his rights as firstborn were given to the sons of Joseph, Israel's son. So Reuben is not listed as firstborn in the genealogical records.
Ezekiel 22:10
They have sex with their father's wife within you; they violate women during their menstrual period within you.
Amos 2:7
They trample on the dirt-covered heads of the poor; they push the destitute away. A man and his father go to the same girl; in this way they show disrespect for my moral purity.