Leviticus 20:10-11

¹⁰And if there be a man that committeth adultery with a man's wife, whoever it be that committeth adultery with his neighbor's wife: then shall the adulterer be put to death, together with the adulteress.

¹¹And a man that lieth with his father's wife, hath uncovered his father's nakedness: both of them shall be put to death; their blood shall be upon them.