John Chrysostom
When the Apostle spoke with the Corinthians about their division, he did not immediately begin with rebuke. First he spoke to them gently, and only then passed to reproof, saying: "For it has been reported to me about you, my brethren, by those of Chloe's household, that there are contentions among you" (1 Cor 1:11).
Here it is not so. He immediately utters the rebuke and directs the force of the reproach, as far as possible, against all. He does not say, "Why does such a one commit adultery?" but, "Fornication has appeared among you."
He does this so that, considering themselves wholly free from blame, they may not remain inattentive. Rather, they should see that their whole community is subject to rebuke, and that their whole church is not free from accusation.
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For this reason they should become zealous in piety. No one will say, he means, that such a one has committed adultery, but that a crime has been committed in the Corinthian church.
He does not say, "They dare to commit adultery," but, "There is a reliable report, such as is not even heard of among the Gentiles." He often rebukes believers by the example of the Gentiles.
Thus, in the epistle to the Thessalonians he says: "That each of you should know how to possess his own vessel in holiness and honor, not in the passion of lust, like the Gentiles" (1 Thess 4:4-5).
Likewise to the Colossians and Ephesians: "That you should no longer walk as the rest of the nations walk" (Eph 4:17). If it is inexcusable for them to sin like the Gentiles, then what shall we say of surpassing the Gentiles in this respect?
Among them, he says, not only is nothing like this done, it is not even named. Do you see how he weighs this crime? If they allow such a form of immorality, which unbelievers not only do not do but do not even know, then the greatness of their sin is inexpressible.
The phrase "among you" is used here with special force. That is, among you believers, who have been counted worthy of such mysteries, received ineffable blessings, and been called to heaven.
Do you see with what indignation and anger against all his words are filled? If he had not felt great anger, he would not have directed his speech to all. He would have said: I have heard that such a one commits adultery. Punish him.
But now he does not speak so, and instead directs his speech against all. If they had written to him about this beforehand, he would have expressed himself in that way.
But since they not only did not write, but even concealed the sin, he uses a stronger manner of speech. "That someone has his father's wife." Why did he not say, "someone commits adultery with a woman"?
He was exposing something excessively shameful. Therefore he spoke of it with a certain modesty, as we explained above. Yet through this very thing he again expressed the gravity of the crime.
He showed that among them something was being done which Paul does not even allow himself to name directly. Therefore further on he uses the same manner of speech: "the one who has done this deed," he says.
Again he is ashamed and does not allow himself to speak directly, just as we too are accustomed to do concerning especially base actions. He does not say "stepmother," but "father's wife," so as to touch them more deeply.
When the very names are sufficient for rebuke, he uses them without adding anything else.