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.

1 Corinthians 6:9
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,

2 Corinthians 12:21
I am afraid that when I come again, my God will humble me before you, and I will be grieved over many who have sinned earlier and have not repented of their acts of impurity, sexual immorality, and debauchery.

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

Ephesians 5:3
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.

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

1 Thessalonians 4:3
For it is God's will that you should be holy: You must abstain from sexual immorality;

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

Flee fornication. Every sin that a man does is without the body; but he that commits fornication sins against his own body.