Leviticus 20:11
And the man who has sex relations with his father's wife has put shame on his father: the two of them are to be put to death; their blood will be on them.
Deuteronomy 27:20
Cursed is he who has sex relations with his father's wife, for he has put shame on his father. And let all the people say, So be it.
Deuteronomy 27:23
Cursed is he who has sex relations with his mother-in-law. And let all the people say, So be it.
Leviticus 18:7-8
You may not have sex relations with your father or your mother: she is your mother, you may not take her.
Amos 2:7
Crushing the head of the poor, and turning the steps of the gentle out of the way: and a man and his father go in to the same young woman, putting shame on my holy name:
1 Corinthians 5:1
It is said, in fact, that there is among you a sin of the flesh, such as is not seen even among the Gentiles, that one of you has his father's wife.