So frightful and frightening were the sins referred to that they were not even fit for discussion among saints. They have to be named for purposes of reproof, but it should be unnecessary to discuss them, for they should not exist among the saints.
Covetousness.
Gr. pleonexia, “the desire to have more.” The association of this sin with fornication and uncleanness is perhaps significant (cf. 1 Cor. 5:11; Eph. 5:5; Col. 3:5). Covetousness is greed for more, and this is also a mark of all the sensual sins. The covetousness of both lust and avarice is to be considered among the grosser sins and to be abhorred by all who bear the Christian name. How many Christians are prepared to place the sin of avarice in the same evil category as fornication? Greed is a deadly sin that often passes unnoticed in the most respectable circles; indeed, it is frequently hidden in such terms as “competition” and “success.”
Uncleanness.
Or, “impurity.” Fornication and uncleanness are frequently mentioned together, as in 2 Cor. 12:21; Gal. 5:19; Col. 3:5. The apostle has passed from the consideration of holy love to that of unholy love, to show how the most sacred sentiments can be corrupted.
Fornication.
Gr. porneia, a general term for illicit sexual intercourse of all kinds (see on 1 Cor. 6:18).
But.
One of the striking contrasts that Paul often makes to heighten the effect of his message. What he now presents is in most odious contrast with the “sweetsmelling savour” of the offering of Christ (v. 2).