Matthew 5:27-28
You have heard that it was said, ‘Do not commit adultery.’ / But I tell you that anyone who looks at a woman to lust after her has already committed adultery with her in his heart.

Proverbs 6:32
He who commits adultery lacks judgment; whoever does so destroys himself.

1 Corinthians 6:9-10
Do you not know that the wicked will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral, nor idolaters, nor adulterers, nor men who submit to or perform homosexual acts, / nor thieves, nor the greedy, nor drunkards, nor verbal abusers, nor swindlers, will inherit the kingdom of God.

Hebrews 13:4
Marriage should be honored by all and the marriage bed kept undefiled, for God will judge the sexually immoral and adulterers.

Leviticus 18:20
You must not lie carnally with your neighbor’s wife and thus defile yourself with her.

Deuteronomy 5:18
You shall not commit adultery.

Matthew 19:9
Now I tell you that whoever divorces his wife, except for sexual immorality, and marries another woman commits adultery.”

Romans 13:9
The commandments “Do not commit adultery,” “Do not murder,” “Do not steal,” “Do not covet,” and any other commandments, are summed up in this one decree: “Love your neighbor as yourself.”

1 Thessalonians 4:3-5
For it is God’s will that you should be holy: You must abstain from sexual immorality; / each of you must know how to control his own body in holiness and honor, / not in lustful passion like the Gentiles who do not know God;

Mark 10:11-12
So He told them, “Whoever divorces his wife and marries another woman commits adultery against her. / And if a woman divorces her husband and marries another man, she commits adultery.”

Job 31:1
“I have made a covenant with my eyes. How then could I gaze with desire at a virgin?

Galatians 5:19
The acts of the flesh are obvious: sexual immorality, impurity, and debauchery;

Luke 16:18
Anyone who divorces his wife and marries another woman commits adultery, and he who marries a divorced woman commits adultery.

1 Corinthians 7:2
But because there is so much sexual immorality, each man should have his own wife, and each woman her own husband.

Proverbs 5:18-20
May your fountain be blessed, and may you rejoice in the wife of your youth: / A loving doe, a graceful fawn—may her breasts satisfy you always; may you be captivated by her love forever. / Why be captivated, my son, by an adulteress, or embrace the bosom of a stranger?