Flee fornication. Every sin that a man does is outside the body; but he that commits fornication sins against his own body.
All Commentaries on 1 Corinthians 6:18 Go To 1 Corinthians 6
John Chrysostom
AD 407
What Paul says here obviously applies to the murderer, the covetous person and the extortioner equally well. But as it was not possible to mention anything worse than fornication, Paul magnifies the crime by saying that in the fornicator the entire body is defiled. It is a sin against one’s own self in a way that the others are not.
