Exodus 20:14
Thou shalt not commit adultery.
Leviticus 20:10
And the man that committeth adultery with another man’s wife, even he that committeth adultery with his neighbor’s wife, the adulterer and the adulteress shall surely be put to death.
Proverbs 2:12-19
To deliver thee from the way of the evil man, from the man that speaketh froward things; Who leave the paths of uprightness, to walk in the ways of darkness; who rejoice to do evil, and delight in the frowardness of the wicked; Whose ways are crooked, and they froward in their paths: To deliver thee from the strange woman, even from the stranger which flattereth with her words; Which forsaketh the guide of her youth, and forgetteth the covenant of her God. For her house inclineth unto death, and her paths unto the dead. None that go unto her return again, neither take they hold of the paths of life.
Proverbs 6:32-35
But whoso committeth adultery with a woman lacketh understanding: he that doeth it destroyeth his own soul. A wound and dishonor shall he get, and his reproach shall not be wiped away. For jealousy is the rage of a man: therefore he will not spare in the day of vengeance. He will not regard any ransom; neither will he rest content, though thou givest many gifts.
Jeremiah 23:14
I have seen also in the prophets of Jerusalem a horrible thing: they commit adultery, and walk in lies: they strengthen also the hands of evildoers, that none doth return from his wickedness: they are all of them unto me as Sodom and the inhabitants thereof as Gomorrah.
Matthew 5:28
But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Matthew 5:32
But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery.
Matthew 19:9
And I say unto you, Whosoever shall put away his wife, except it be for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery.
Mark 10:11
And he saith unto them, Whosoever shall put away his wife, and marry another, committeth adultery against her.
Galatians 5:19
Now the works of the flesh are manifest, which are these; Adultery, fornication, uncleanness, lasciviousness,
Hebrews 13:4
Marriage is honorable in all, and the bed undefiled: but whoremongers and adulterers God will judge.