Leviticus 20:9, 11-12

“Any and every person who curses his father or mother must be put to death. By cursing his father or mother he is responsible for his own death.

“If a man has sex with his father’s wife, he has violated his father. Both the man and woman must be put to death; they are responsible for their own deaths. “If a man has sex with his daughter-in-law, both of them must be put to death. What they have done is perverse. And they are responsible for their own deaths.