The conjunction of the husband and wife, mentioned Genesis 2:24, and the conjunction of the fornicator and the harlot, differ not as to the species of the act, only as to the morality of it; the former is an honest and lawful act, the other a dishonest and filthy act. So that he that is wickedly joined to a harlot, maketh himself one flesh with her with whom he committeth that folly and lewdness, and he must needs by it separate his body from its membership with Christ, whose holiness will admit no such union.
Related Commentaries of 1 Corinthians 6:16
1 Corinthians 6:16
16 What? know ye not that he which is joined to an harlot is one body? for two, saith he, shall be one flesh.