Leviticus 20:9, 11-12

For anyone who curses his father or his mother shall surely be put to death; he has cursed his father or his mother; his blood is upon him.

If a man lies with his father’s wife, he has uncovered his father’s nakedness; both of them shall surely be put to death; their blood is upon them. If a man lies with his daughter-in-law, both of them shall surely be put to death; they have committed perversion; their blood is upon them.