1 Corinthians 6:18
Flee from sexual immorality. Every other sin a man can commit is outside his body, but he who sins sexually sins against his own body.

2 Timothy 2:22
Flee from youthful passions and pursue righteousness, faith, love, and peace, together with those who call on the Lord out of a pure heart.

Matthew 5:28-30
But I tell you that anyone who looks at a woman to lust after her has already committed adultery with her in his heart. / If your right eye causes you to sin, gouge it out and throw it away. It is better for you to lose one part of your body than for your whole body to be thrown into hell. / And if your right hand causes you to sin, cut it off and throw it away. It is better for you to lose one part of your body than for your whole body to depart into hell.

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;

Romans 13:13-14
Let us behave decently, as in the daytime, not in carousing and drunkenness, not in sexual immorality and debauchery, not in dissension and jealousy. / Instead, clothe yourselves with the Lord Jesus Christ, and make no provision for the desires of the flesh.

Ephesians 5:3-5
But among you, as is proper among the saints, there must not be even a hint of sexual immorality, or of any kind of impurity, or of greed. / Nor should there be obscenity, foolish talk, or crude joking, which are out of character, but rather thanksgiving. / For of this you can be sure: No immoral, impure, or greedy person (that is, an idolater) has any inheritance in the kingdom of Christ and of God.

Galatians 5:19-21
The acts of the flesh are obvious: sexual immorality, impurity, and debauchery; / idolatry and sorcery; hatred, discord, jealousy, and rage; rivalries, divisions, factions, / and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who practice such things will not inherit the kingdom of God.

James 1:14-15
But each one is tempted when by his own evil desires he is lured away and enticed. / Then after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death.

1 Peter 2:11
Beloved, I urge you, as foreigners and exiles, to abstain from the desires of the flesh, which war against your soul.

Colossians 3:5
Put to death, therefore, the components of your earthly nature: sexual immorality, impurity, lust, evil desires, and greed, which is idolatry.

Genesis 39:7-12
and after some time his master’s wife cast her eyes upon Joseph and said, “Sleep with me.” / But he refused. “Look,” he said to his master’s wife, “with me here, my master does not concern himself with anything in his house, and he has entrusted everything he owns to my care. / No one in this house is greater than I am. He has withheld nothing from me except you, because you are his wife. So how could I do such a great evil and sin against God?” ...

Psalm 119:37
Turn my eyes away from worthless things; revive me with Your word.

Proverbs 4:14-15
Do not set foot on the path of the wicked or walk in the way of evildoers. / Avoid it; do not travel on it. Turn from it and pass on by.

Proverbs 6:25-29
Do not lust in your heart for her beauty or let her captivate you with her eyes. / For the levy of the prostitute is poverty, and the adulteress preys upon your very life. / Can a man embrace fire and his clothes not be burned? ...

Proverbs 7:24-27
Now, my sons, listen to me, and attend to the words of my mouth. / Do not let your heart turn aside to her ways; do not stray into her paths. / For she has brought many down to death; her slain are many in number. ...