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.
What it says
Paul tells them to flee sexual immorality, saying that while other sins are outside the body, the one who sins sexually sins against his own body.
What it is doing
It gives the chapter's direct command and explains its seriousness.
In context
18Flee from sexual immorality. Every other sin a man can commit is outside his body, but he who sins sexually sins against his own body. 19Do you not know that your body is a temple of the Holy Spirit who is in you, whom you have received from God? You are not your own; 20you were bought at a price. Therefore glorify God with your body.