Matthew 18:15-17
15. Moreover, if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother, &c.—Probably our Lord had reference still to the late dispute, Who should be the greatest? After the rebuke—so gentle and captivating, yet so dignified and divine—under which they would doubtless be smarting, perhaps each would be saying, It was not I that began it, it was not I that threw out unworthy and irritating insinuations against my brethren. Be it so, says our Lord; but as such things will often arise, I will direct you how to proceed. First, Neither harbor a grudge against your offending brother, nor break forth upon him in presence of the unbelieving; but take him aside, show him his fault, and if he own and make reparation for it, you have done more service to him than even justice to yourself. Next, If this fail, take two or three to witness how just your complaint is, and how brotherly your spirit in dealing with him. Again, If this fail, bring him before the Church or congregation to which both belong. Lastly, If even this fail, regard him as no longer a brother Christian, but as one "without"—as the Jews did Gentiles and publicans.
1 Corinthians 5:9-13
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brief reply to inquiries of the Corinthians: our first Epistle, as it enters more fully into the same subject, has superseded the former, which the Holy Spirit did not design for the guidance of the Church in general, and which therefore has not been preserved.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.
11. But now—"Now" does not express time, but "the case being so," namely, that to avoid fornicators, &c., of the world, you would have to leave the world altogether, which would be absurd. So "now" is used in Heb 11:16. Thus we avoid making the apostle now retract a command which he had before given.
I have written—that is, my meaning in the letter I wrote was "not to keep company," &c. a brother—contrasted with a "fornicator . . . of the world" (1Co 5:10). There is less danger in associating with open worldlings than with carnal professors. Here, as in Eph 5:3, 5, "covetousness" is joined with "fornication": the common fount of both being "the fierce and ever fiercer longing of the creature, which has turned from God, to fill itself with the inferior objects of sense" [TRENCH, Greek Synonyms of the New Testament]. Hence "idolatry" is associated with them: and the covetous man is termed an "idolater" (Nu 25:1, 2). The Corinthians did not fall into open idolatry, but ate things offered to idols, so making a compromise with the heathen; just as they connived at fornication. Thus this verse prepares for the precepts in 1Co 8:4, &c. Compare the similar case of fornication, combined with a similar idolatrous compromise, after the pattern of Israel with the Midianites (Re 2:14). no not to eat—not to sit at the same table with such; whether at the love-feasts (agapæ) or in private intercourse, much more at the Lord's table: at the last, too often now the guests "are not as children in one family, but like a heterogeneous crowd of strangers in an inn" [BENGEL] (compare Ga 2:12; 2Jo 10, 11).12. what have I to do—You might have easily understood that my concern is not with unbelievers outside the Church, but that I referred to those within it.
also—Implying, Those within give me enough to do without those outside. do not ye, &c.—Ye judge your fellow citizens, not strangers: much more should I [BENGEL]. Rather, Is it not your duty to judge them that are within? God shall judge them that are without: do you look at home [GROTIUS]. God is the Judge of the salvation of the heathen, not we (Ro 2:12-16). Paul here gives an anticipatory censure of their going to law with saints before heathen tribunals, instead of judging such causes among themselves within.13. put away from among yourselves that wicked—Sentence of excommunication in language taken from De 24:7.
Ephesians 5:11
11. unfruitful works of darkness—Sins are terminated in themselves, and therefore are called "works," not "fruits" (Ga 5:19, 22). Their only fruit is that which is not in a true sense fruit (De 32:32), namely, "death" (Ro 6:21; Ga 6:8). Plants cannot bear "fruit" in the absence of light. Sin is "darkness," and its parent is the prince of darkness (Eph 6:12). Graces, on the other hand, as flourishing in "the light," are reproductive, and abound in fruits; which, as harmoniously combining in one whole, are termed (in the singular) "the FRUIT of the Spirit" (Eph 5:9).
rather, &c.—Translate as Greek, "rather even reprove them" (compare Mt 5:14-16). Not only "have no fellowship, but even reprove them," namely, in words, and in your deeds, which, shining with "the light," virtually reprove all that is contrary to light (Eph 5:13; Joh 3:19-21). "Have no fellowship," does not imply that we can avoid all intercourse (1Co 5:10), but "avoid such fellowship as will defile yourselves"; just as light, though it touch filth, is not soiled by it; nay, as light detects it, so, "even reprove sin."