Leviticus 20:11

If a man sleeps with his father’s wife, he has shamed his father. Both of them must be put to death; their blood is on their own hands.

Deuteronomy 27:20

‘The one who sleeps with his father’s wife is cursed, for he has violated his father’s marriage bed.’
And all the people will say, ‘Amen!’

Deuteronomy 27:23

‘The one who sleeps with his mother-in-law is cursed.’
And all the people will say, ‘Amen!’

Leviticus 18:7-8

You are not to shame your father by having sex with your mother. She is your mother; you must not have sexual intercourse with her.

Amos 2:7

They trample the heads of the poor
on the dust of the ground
and block the path of the needy.
A man and his father have sexual relations
with the same girl,
profaning My holy name.

1 Corinthians 5:1

It is widely reported that there is sexual immorality among you, and the kind of sexual immorality that is not even tolerated among the Gentiles—a man is living with his father’s wife.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Their

Leviticus 20:9
“If anyone curses his father or mother, he must be put to death. He has cursed his father or mother; his blood is on his own hands.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.