But ye do injury. Hence we see for what reason he has inveighed against them with so much bitterness -- because there prevailed among them such a base desire of gain, that they did not even refrain from injuring one another. He premised a little before, with the view of exposing the magnitude of the evil, that those are not Christians who know not to endure injuries. There is, then, an amplification here, founded on a comparison: for if it is wrong not to bear injuries patiently, how much worse is it to inflict them? And that your brethren Here is another aggravation of the evil; for if those are doubly culpable who defraud strangers, it is monstrous for brother to be cheated or despoiled by brother Now all of us are brethren that call upon one Father in heaven (Matthew 23:9.) At the same time, if any one acts an unprincipled part towards strangers, Paul does not palliate the crime; but he teaches that the Corinthians were utterly blinded in making sacred brotherhood a matter of no moment.

Nay, ye do wrong - Instead of enduring wrong patiently and cheerfully. they were themselves guilty oi injustice and fraud.
And that your brethren - Your fellow Christians. As if they had injured those of their own family - those to whom they ought to be attached by most tender ties. The offence in such cases is aggravated, not because it is in itself any worse to injure a Christian than another man, but because it shows a deeper depravity, when a man overcomes all the ties of kindness and love, and injures those who are near to him, than it does where no such ties exist. It is for this reason that parricide, infanticide, etc. are regarded everywhere as crimes of special atrocity, because a child or a parent must have severed all the tenderest cords of virtue before it could be done.

Nay, ye do wrong - Far from suffering, ye are the aggressors; and defraud your pious, long-suffering brethren, who submit to this wrong rather than take those methods of redressing their grievances which the spirit of Christianity forbids. Probably the apostle refers to him who had taken his father's wife.

Nay, you do wrong and defraud,.... So far were they from taking and acting up to the advice given, that instead of taking wrong, they did wrong; and instead of suffering themselves to be defrauded, they defrauded others:
and that your brethren; that were of the same faith, of the same religion, and in the same church and family: in short, neither party, not the plaintiff, nor the defendant, sought anything more or less than to wrong, trick, and defraud each other; such a sad corruption and degeneracy prevailed among them: hence the apostle thought to deal plainly and closely with them, as in the following verses.

ye--emphatic. Ye, whom your Lord commanded to return good for evil, on the contrary, "do wrong (by taking away) and defraud" (by retaining what is entrusted to you; or "defraud" marks the effect of the "wrong" done, namely, the loss inflicted). Not only do ye not bear, but ye inflict wrongs.

Nay, ye do wrong - Openly. And defraud - Privately. O how powerfully did the mystery of iniquity already work!