Ephesians 5:11

unfruitful works of darkness--Sins are terminated in themselves, and therefore are called "works," not "fruits" (Gal 5:19, Gal 5:22). Their only fruit is that which is not in a true sense fruit (Deu 32:32), namely, "death" (Rom 6:21; Gal 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 Mat 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 (Co1 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."

We had several important exhortations in the close of the foregoing chapter, and they are continued in this: particularly, I. We have here an exhortation to mutual love and charity (Eph 5:1, Eph 5:2). II. Against all manner of uncleanness, with proper arguments and remedies proposed against such sins: and some further cautions are added, and other duties recommended (v. 3-20). III. The apostle directs to the conscientious discharge of relative duties, from Eph 5:21, throughout this, and in the beginning of the next chapter.

5:11 expose them: By the light shining from their lives (cp. John 3:20-21; Rom 13:12; 1 Pet 2:9), not by verbally accusing or condemning people (see 1 Cor 5:9-13).