Exodus 20:14
"You shall not commit adultery.
Leviticus 20:10
"If a man commits adultery with the wife of his neighbor, both the adulterer and the adulteress shall be put to death.
Deuteronomy 5:18
"`Neither shall you commit adultery.
Deuteronomy 22:22-24
"If a man is found lying with the wife of another man, both of them shall die, the man who lay with the woman, and the woman; so you shall purge the evil from Israel.
"If there is a betrothed virgin, and a man meets her in the city and lies with her,
then you shall bring them both out to the gate of that city, and you shall stone them to death with stones, the young woman because she did not cry for help though she was in the city, and the man because he violated his neighbor's wife; so you shall purge the evil from the midst of you.
Proverbs 6:32
He who commits adultery has no sense; he who does it destroys himself.