Know ye not that your bodies are the members of Christ? shall I then take the members of Christ, and make them the members of an harlot? God forbid.
Resuming 1 Corinthians 6:13, "the body is ... for the Lord" (1 Corinthians 12:27; Ephesians 4:12; Ephesians 4:15-16; Ephesians 5:30-31).
Shall I then take? (Hebrew, laaqach (H3947)) - deliberately alienating them from Christ. For they cannot be at once "the members of an harlot" and "of Christ." Moral and spiritual ruin is caused by such sins, which human wisdom held to be actions as blameless as eating.