Leviticus 20:10

10 "If a man commits adultery with another man's wife - the wife, say, of his neighbor - both the man and the woman, the adulterer and adulteress, must be put to death.

Leviticus 20:10 In-Context

8 Do what I tell you; live the way I tell you. I am the God who makes you holy.
9 "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.
10 "If a man commits adultery with another man's wife - the wife, say, of his neighbor - both the man and the woman, the adulterer and adulteress, must be put to death.
11 "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.
12 "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.
Published by permission. Originally published by NavPress in English as THE MESSAGE: The Bible in Contemporary Language copyright 2002 by Eugene Peterson. All rights reserved.