Thou shalt not commit adultery.
Leviticus 18:20
Moreover thou shalt not lie carnally with thy neighbour's wife, to defile thyself with her.
Leviticus 20:10
And the man that committeth adultery with another man's wife, even he that committeth adultery with his neighbour's wife, the adulterer and the adulteress shall surely be put to death.
2 Samuel 11:4
And David sent messengers, and took her; and she came in unto him, and he lay with her; for she was purified from her uncleanness: and she returned unto her house.
2 Samuel 11:5
And the woman conceived, and sent and told David, and said, I am with child.
2 Samuel 11:27
And when the mourning was past, David sent and fetched her to his house, and she became his wife, and bare him a son. But the thing that David had done displeased the LORD.
Proverbs 2:15-18
15
Whose ways are crooked, and they froward in their paths:
16
To deliver thee from the strange woman, even from the stranger which flattereth with her words;
17
Which forsaketh the guide of her youth, and forgetteth the covenant of her God.
18
For her house inclineth unto death, and her paths unto the dead.
Proverbs 6:24-35
24
To keep thee from the evil woman, from the flattery of the tongue of a strange woman.
25
Lust not after her beauty in thine heart; neither let her take thee with her eyelids.
26
For by means of a whorish woman a man is brought to a piece of bread: and the adulteress will hunt for the precious life.
27
Can a man take fire in his bosom, and his clothes not be burned?
28
Can one go upon hot coals, and his feet not be burned?
29
So he that goeth in to his neighbour's wife; whosoever toucheth her shall not be innocent.
30
Men do not despise a thief, if he steal to satisfy his soul when he is hungry;
31
But if he be found, he shall restore sevenfold; he shall give all the substance of his house.
32
But whoso committeth adultery with a woman lacketh understanding: he that doeth it destroyeth his own soul.
33
A wound and dishonour shall he get; and his reproach shall not be wiped away.
34
For jealousy is the rage of a man: therefore he will not spare in the day of vengeance.
35
He will not regard any ransom; neither will he rest content, though thou givest many gifts.
Proverbs 7:18-27
18
Come, let us take our fill of love until the morning: let us solace ourselves with loves.
19
For the goodman is not at home, he is gone a long journey:
20
He hath taken a bag of money with him, and will come home at the day appointed.
21
With her much fair speech she caused him to yield, with the flattering of her lips she forced him.
22
He goeth after her straightway, as an ox goeth to the slaughter, or as a fool to the correction of the stocks;
23
Till a dart strike through his liver; as a bird hasteth to the snare, and knoweth not that it is for his life.
24
Hearken unto me now therefore, O ye children, and attend to the words of my mouth.
25
Let not thine heart decline to her ways, go not astray in her paths.
26
For she hath cast down many wounded: yea, many strong men have been slain by her.
27
Her house is the way to hell, going down to the chambers of death.
Jeremiah 5:8
They were as fed horses in the morning: every one neighed after his neighbour's wife.
Jeremiah 5:9
Shall I not visit for these things? saith the LORD: and shall not my soul be avenged on such a nation as this?
Jeremiah 29:22
And of them shall be taken up a curse by all the captivity of Judah which are in Babylon, saying, The LORD make thee like Zedekiah and like Ahab, whom the king of Babylon roasted in the fire;
Jeremiah 29:23
Because they have committed villany in Israel, and have committed adultery with their neighbours' wives, and have spoken lying words in my name, which I have not commanded them; even I know, and am a witness, saith the LORD.
Malachi 3:5
And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in his wages, the widow, and the fatherless, and that turn aside the stranger from his right, and fear not me, saith the LORD of hosts.
Matthew 5:27
Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
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.
Mark 10:11
And he saith unto them, Whosoever shall put away his wife, and marry another, committeth adultery against her.
Mark 10:12
And if a woman shall put away her husband, and be married to another, she committeth adultery.
Romans 7:2
For the woman which hath an husband is bound by the law to her husband so long as he liveth; but if the husband be dead, she is loosed from the law of her husband.
Romans 7:3
So then if, while her husband liveth, she be married to another man, she shall be called an adulteress: but if her husband be dead, she is free from that law; so that she is no adulteress, though she be married to another man.
Ephesians 5:3-5
3
But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;
4
Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks.
5
For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God.
Hebrews 13:4
Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.
James 4:4
Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the 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, shall have their part in the lake which burneth with fire and brimstone: which is the second death.