John Chrysostom
"Do not be unequally yoked with unbelievers" (2 Cor 6:14). He did not say, "Do not mingle with unbelievers." Rather, to convict them more strongly as transgressors of righteousness, he says: do not turn aside into their ways.
"For what fellowship has righteousness with lawlessness?"
Here he no longer distinguishes between his own love and the love of those who corrupted the Corinthians. He distinguishes between the nobility of the latter and the baseness of the former. Because of this, his speech became weightier and more fitting to his dignity, and more attractive to the Corinthians.
Read more (384 words)
If someone said to a son who dishonors his parents and gives himself to corrupt men: "What are you doing, child? You despise your father and prefer corrupt men devoted to every impiety. Do you not know how much better and nobler you are than they?" By such words he would better turn him away from communion with them than if he praised only the father.
If he said, "Do you not know how much better your father is than they?" he would accomplish nothing. But if, leaving the father aside, he points to the son's own superiority over them, saying, "Do you not know who you are and who they are? Why do you not consider your nobility and free birth, and their baseness? What have you in common with such thieves, adulterers, and robbers?" Then, as if giving him wings by such praises, he easily disposes him to leave their company.
He will not so readily accept the first exhortations, because praise of the father will already serve as an accusation. In this very case he appears to be insulting not only his father, but precisely such a father. Here he hears nothing like this.
Besides, who does not love praise? Therefore reproof itself, when joined with praise of the hearer, becomes easier to receive. It softens, raises the spirit, and makes one abhor company with wicked men.
Here not only this distinction is worthy of admiration, but also the fact that he devised something greater to awaken fear in them. First he conducts his speech through questions, as is usually done when one speaks of something known and evident to all.
Then he expands it with many and various names. He places before the hearers' eyes not one, not two, and not three, but many names of the things compared. On the one side, he depicts the height of the virtues. On the other, he depicts the utter baseness of vice. Through the great, even infinite, distance between them, he shows that the matter no longer requires any proof.
"What fellowship," he says, "has righteousness with lawlessness? What communion has light with darkness? What accord has Christ with Belial? Or what portion has a believer with an unbeliever? Or what agreement has the temple of God with idols?" (2 Cor 6:15-16).