Leviticus 20:11
"And the man that lieth with his father’s wife hath uncovered his father’s nakedness: both of them shall surely be put to death; their blood shall be upon them."
Cross References (ranked by relevance)
Deuteronomy 27:23
Cursed be he that lieth with his mother in law. And all the people shall say, Amen.
Deuteronomy 27:20
Cursed be he that lieth with his father’s wife; because he uncovereth his father’s skirt. And all the people shall say, Amen.
Amos 2:7
That pant after the dust of the earth on the head of the poor, and turn aside the way of the meek: and a man and his father will go in unto the same maid, to profane my holy name:
1 Corinthians 5:1
It is reported commonly that there is fornication among you, and such fornication as is not so much as named among the Gentiles, that one should have his father’s wife.