Thou shalt not commit adultery.

Exodus 18:20 And to shew the people the ceremonies, and the manner of worshipping; and the way wherein they ought to walk, and the work that they ought to do.

Exodus 20:10 But on the seventh day is the sabbath of the Lord thy God: thou shalt do no work on it, thou nor thy son, nor thy daughter, nor thy manservant, nor thy maidservant, nor thy beast, nor the stranger that is within thy gates.

2 Samuel 11:4,5,27 And David sent messengers, and took her, and she came in to him, and he slept with her: and presently she was purified from her uncleanness: . . .

Proverbs 2:15-18 That thou mayst be delivered from the strange woman, and from the stranger, who softeneth her words; . . .

Proverbs 6:24-35 Let not thy heart covet her beauty, be not caught with her winks: . . .

Proverbs 7:18-27 For my husband is not at home, he is gone a very long journey. . . .

Jeremiah 5:8,9 They are become as amorous horses and stallions: every one neighed after his neighbour's wife. . . .

Jeremiah 29:22,23 And of them shall be taken up a curse by all the captivity of Juda, that are in Babylon, saying: The Lord make thee like Sedecias, and like Achab, whom the king of Babylon fried in the fire: . . .

Malachi 3:5 And I will come to you in judgment, and will be a speedy witness against sorcerers, and adulterers, and false swearers, and them that oppress the hireling in his wages, the widows, and the fatherless: and oppress the stranger, and have not feared me, saith the Lord of hosts.

Matthew 5:27,28 You have heard that it was said to them of old: Thou shalt not commit adultery. . . .

Mark 10:11,12 And he saith to them: Whosoever shall put away his wife and marry another committeth adultery against her. . . .

Romans 7:2,3 For the woman that hath an husband, whilst her husband liveth is bound to the law. But if her husband be dead, she is loosed from the law of her husband. . . .

Ephesians 5:3-5 But fornication and all uncleanness or covetousness, let it not so much as be named among you, as becometh saints: . . .

Hebrews 13:4 Marriage honourable in all, and the bed undefiled. For fornicators and adulterers God will judge.

James 4:4 Adulterers, know you not that the friendship of this world is the enemy of God? Whosoever therefore will be a friend of this world becometh an enemy of God.

Revelation 21:8 But the fearful and unbelieving and the abominable and murderers and whoremongers and sorcerers and idolaters and all liars, they shall have their portion in the pool burning with fire and brimstone, which is the second death.