Leviticus 20:10-12

¹⁰If a man doeth lechery with another man’s wife, and doeth adultery with his neighbour’s wife, both the adulterer and the adulteress die they by death.

¹¹If a man sleepeth with his step-dame, and showeth his father’s shame, both they die by death; their blood be on them.

¹²If any man sleepeth with his son’s wife, ever either die, for they have wrought great sin; their blood be on them.