Charles Hodge on Ephesians 5:3

V. 3. But fornication and all uncleanness, or covetousness, let it not be once named among you, as becometh saints.

In the preceding section the apostle had spoken of sins against our neighbour; here from v. 3 to v. 20 he dwells principally on sins against ourselves. Not only fornication, but every thing of the same nature, or that leads to it, is to be avoided—and not only avoided, but not even named among believers. The inconsistency of all such sins with the character of Christians, as saints, men selected from the world and consecrated to God, is such as should forbid the very mention of them in a Christian society. With the sins of uncleanness the apostle here, as in the preceding chapter, v. 19, connects πλεονεξία, covetousness. The word is to be taken in its ordinary sense, as there is nothing in the context to justify any departure from it. The assumption that sins of sensuality are alone mentioned in this and the following verse, leads to very forced interpretations of several of the terms employed.