Ephesians 5:11

"And have no fellowship," he adds, "with the unfruitful works of darkness, but rather even reprove them; for the things which are done by them in secret, it is a shame even to speak of; but all things when they are reproved are made manifest by the light." Hearken, I entreat you, all, as many of you as like not to be hated for nothing, but to be loved. "What need is there to be hated?" one says. A man commits a robbery, and dost thou not reprove him, but art afraid of his hatred? though this, however, is not being hated for nothing. But dost thou justly convict him, and yet fear the hatred? Convict thy brother, incur enmity for the love's sake which thou owest to Christ, for the love's sake which thou owest to thy brother. Arrest him as he is on his road to the pit of destruction. For to admit him to our table, to treat him with civil speeches, with salutations, and with entertainments, these are no signal proofs of friendship. No, those I have mentioned are the boons which we must bestow upon our friends, that we may rescue their souls from the wrath of God. When we see them lying prostrate in the furnace of wickedness, let us raise them up. "But," they say, "it is of no use, he is incorrigible." However, do thou thy duty, and then thou hast excused thyself to God. Hide not thy talent. It is for this that thou hast speech, it is for this thou hast a mouth and a tongue, that thou mayest correct thy neighbor. It is dumb and reasonless creatures only that have no care for their neighbor, and take no account of others. But dost thou while calling God, "Father," and thy neighbor, "brother," when thou seest him committing unnumbered wickednesses, dost thou prefer his good-will to his welfare? No, do not so, I entreat you. There is no evidence of friendship so true as never to overlook the sins of our brethren. Didst thou see them at enmity? Reconcile them. […]

After this he exhorts them not to return to the state they have left behind because, as Galatians 2 (18) remarks: "If I build up again the things which I have destroyed, I make myself a prevaricator." Lest "the dog is returned to his vomit; …

The works of darkness and sin are fruitless, because they bring nothing other than death and shame. Therefore, one must not participate in such works, but on the contrary, expose them, that is, admonish those who do such things.

And have no fellowship with the unfruitful works of darkness,....

These works of darkness are unfruitful works; there is nothing got by them in the long run, whatever profit is pretended by sin, it will by no means balance the loss; for it issues in the utter ruin and destruction of the impenitent sinner.

And have no fellowship - See the sentiment here expressed fully explained in the notes on 2Co 6:14-18. The unfruitful works - The deeds of darkness that produce no “benefit” to the body or the soul. The word “unfruitful” is used here in contrast with the “fruit of the Spirit,” Eph 5:9. But rather reprove them - By your life, your conversation, and all your influence. This is the business of Christians. Their lives should be a standing rebuke of a sinful world, and they should be ever ready to express their disapprobation of its wickedness in every form.

SINS, especially the grosser vices, are "works of darkness." They delight in concealment. They are not fit to be seen. They flourish in the darkness of the unrenewed heart. They are most fully maintained in the ignorance of a soul that is without the knowledge of the ever-blessed God. They are also works of darkness because those who follow them have a sad life of it, after all—they are not only dark as to knowledge, but they are dark as to comfort as well! There is no true light, no real joy in sin. "The wages of sin is death."

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).

SINS, especially the grosser vices, are "works of darkness." They delight in concealment. They are not fit to be seen. They flourish in the darkness of the unrenewed heart. They are most fully maintained in the ignorance of a soul that is without the knowledge of the ever-blessed God. They are also works of darkness because those who follow them have a sad life of it, after all—they are not only dark as to knowledge, but they are dark as to comfort as well! There is no true light, no real joy in sin. "The wages of sin is death." And they are works of darkness, too, because they tend to further darkness—the man who pursues them goes from blackness to a deeper blackness—and in the end his portion will be darkness unbroken by a ray of hope, "the blackness of darkness forever." You know that darkness stands for the powers of evil, as light is the fit emblem of the holiness of God and of His Infinite goodness and purifying Grace. Well, now, whether we, who are the children of light, are busy or not, it is quite certain that children of darkness work! They are always working—there is no cessation in their activity. Master Latimer used to say that the most diligent bishop in England was the devil, for whoever did not visit his diocese, the devil was always visiting his people! His plow never rusts in the furrow, his sword never rests in its scabbard.

Have no fellowship - Have no religious connection whatever with heathens or their worship. Unfruitful works of darkness - Probably alluding to the mysteries among the heathens, and the different lustrations and rites through which the initiated went in the caves and dark recesses where these mysteries were celebrated; all which he denominates works of darkness, because they were destitute of true wisdom; and unfruitful works, because they were of no use to mankind; the initiated being obliged, on pain of death, to keep secret what they had seen, heard, and done: hence they were called απορῥητα μυστηρια, unspeakable mysteries - things that were not to be divulged. That the apostle may refer to magic and incantations is also probable, for to these the Ephesians were greatly addicted. See the proofs in the notes on Act 19:19. Rather reprove them - Bear a testimony against them; convince them that they are wrong; confute them in their vain reasons; reprove them for their vices, which are flagrant, while pretending to superior illumination. All these meanings has the Greek word ελεγχω, which we generally render to convince or reprove.

If the modern world will not insist on having some sharp and definite moral law, capable of resisting the counter-attractions of art and humour, the modern world will simply be given over as a spoil to anybody who can manage to do a nasty thing …