It has actually been reported [to me] that there is a case of sexual immorality among you that is unheard of, even among the [unconverted] Gentiles. One of you is having sex with his stepmother.

But the person who is joined to the Lord is one spirit [with Him]. [Note: Just as the person who has sex with someone enters a close physical union with that person, so the person who becomes a Christian enters a close spiritual union with Christ].

Stay away from [any involvement in] sexual immorality. Every sin a person commits is outside [the realm] of his body; but the one who commits sexual immorality sins against his own body. [Note: Possibly this means that sex, because it requires the deepest and most complete commitment of human involvement, becomes a unique sin when its true purpose and expression are violated].

[So], do not worship idols as some of them did, as it is written [Ex. 32:6], "The people sat down to feast and drink, then got up and played." [Note: This refers to the Israelites engaging in an orgy of dancing and sex. See Ex. 32:17-19].

And those parts of the body which we consider less honorable [i.e., probably female breasts, buttocks, etc.], we clothe with greater honor. [Note: The Greek word for "clothe" here refers to clothing elsewhere in the New Testament]. And our unpresentable parts [i.e., probably sex organs] need to be more presentable [i.e., by being covered up with modest clothing],