Or do you not know that he who is joined to a prostitute becomes one body with her? For, as it is written, “The two will become one flesh.”
16. Know ye not that he that is joined to an harlot He brings out more fully the greatness of the injury that is done to Christ by the man that has intercourse with an harlot; for he becomes one body, and hence he tears away a member from Christ’s body.
The twelfth verse and former part of the thirteenth seem to relate to that early dispute among Christians about the distinction of meats, and yet to be prefatory to the caution that follows against fornication. The connection seems plain enough if we attend to the famous determination of the apostles, Acts 15, where the prohibition of certain foods was joined with that of fornication.
Commenting on 1 Corinthians 6:12-20
What? know ye not that he which is joined to an harlot,.... Not in marriage, but in carnal copulation, and unclean embraces, is one body with her for two ("saith he", Adam, or Moses, or God, or the Scripture, or as R. Sol.