Leviticus 20:10-12

10‘The man who commits adultery with another’s wife, even his neighbor’s wife, the adulterer and the adulteress shall most certainly be put to death.

11The man who lies [intimately] with his father’s wife has uncovered his father’s nakedness; both of them shall most certainly be put to death; their blood is on them.

12If a man lies [intimately] with his daughter-in-law, both of them shall most certainly be put to death; they have committed incest; their blood is on them.