9. I wrote . . . in an epistle—rather, "in the Epistle": a former one not now extant. That Paul does not refer to the present letter is proved by the fact that no direction "not to company with fornicators" occurs in the previous part of it; also the words, "in an (or, the) epistle," could not have been added if he meant, "I have just written" (2Co 10:10). "His letters" (plural; not applying to merely one) confirm this. 2Co 7:8 also refers to our first Epistle, just as here a former letter is referred to by the same phrase. Paul probably wrote a former brief reply to inquiries of the Corinthians: our first Epistle, as it enters more fully into the same subject, has superseded the former, which the Holy Spirit did not design for the guidance of the Church in general, and which therefore has not been preserved. See my Introduction .

     10. Limitation of the prohibition alluded to in 1Co 5:9. As in dissolute Corinth to "company with no fornicators," &c., would be almost to company with none in the (unbelieving) world; ye need not utterly ("altogether") forego intercourse with fornicators, &c., of the unbelieving world (compare 1Co 10:27; Joh 17:15; 1Jo 5:18, 19). As "fornicators" sin against themselves, so "extortioners" against their neighbors, and "idolaters" against God. The attempt to get "out of the world," in violation of God's will that believers should remain in it but keep themselves from its evil, led to monasticism and its consequent evils.

     31. not abusing it—not abusing it by an overmuch using of it. The meaning of "abusing" here is, not so much perverting, as using it to the full [BENGEL]. We are to use it, "not to take our fill" of its pursuits as our chief aim (compare Lu 10:40-42). As the planets while turning on their own axis, yet revolve round the sun; so while we do our part in our own worldly sphere, God is to be the center of all our desires.