But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Peter before them all, If you, being a Jew, live after the manner of Gentiles, and not as do the Jews, why compel you the Gentiles to live as do the Jews?
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Augustine of Hippo
AD 430
So that one might fulfill the works of the law, his infirmity being assisted not by his own merit but by the grace of God, they were not to demand from the Gentiles a fleshly observation of the law but were to understand that through the same grace of God they were able to fulfill the spiritual works of the law.
That he rebuked him “before all” was necessary, in order that everyone might be bettered by his rebuke. For it was not expedient to correct in secret an error that was doing public harm. It should be added that in his steadfastness and charity Peter, to whom the Lord had said three times, “Do you love me? Feed my sheep,” was very ready to bear this rebuke from a junior shepherd for the salvation of the flock. For the one who was being rebuked was himself more remarkable and more difficult to imitate than the one rebuking. For it is easier to see what one should correct in others than to see what ought to be corrected in oneself. It is easier to correct others by admonishing and rebuking than to be corrected readily even by yourself, let alone by another, still less if you add another and “before all.”
Those who wish to defend Peter from error and from the depravity of life into which he had fallen overturn the very way of religion in which lies the salvation of all. This shatters and diminishes the authority of the Scriptures. They do not see that in this defense they are implicitly charging the apostle Paul not only with the crime of lying but even with perjury in the very teaching of piety, that is, in the letter in which Paul proclaims the gospel. It is for this reason he says, before narrating these things [in :], “What I write to you, understand before God that I do not lie.
He says this so that Hebrews no less than Gentiles may be compelled to accept the grace of faith, not the impositions of the law, which no one could fulfill. .
But when I saw that they walked not uprightly. The Greek word used here denotes literally to walk straight, without turning to the right hand or to the left.
If thou being a Jew lives after the manner of the Gentiles. To live as a Gentile is to partake indifferently of the same food, and thereby to show that the ceremonies of the law are dead, if not deadly, now that the Gospel is being preached. Having done this, why do you now avoid the Gentiles, and so compel them to Judaise?
What is Paul’s design? To preempt suspicion in his reproach. For if Paul had said, “You do wrong in observing the law,” those from Judea would have reproached him, as one who insulted the teacher. But now, rebuking Peter on account of his own disciples—those of Gentile origin I mean— Paul makes his argument palatable. And not in this way only, but by declining to reproach everyone and making the whole reproof fall on the apostle [Peter] alone.
If you, being a Jew, livest as do the Gentiles, and not as do the Jews, how do you compel the Gentiles to live as do the Jews?
But it was the Jews and not the Gentiles who were carried away together with Peter; why then does Paul impute what was not done, instead of directing his remarks, not against the Gentiles, but against the dissembling Jews? And why does he accuse Peter alone, when the rest also dissembled together with him? Let us consider the terms of his charge; If you, being a Jew, livest as do the Gentiles, and not as do the Jews, how do you compel the Gentiles to live as do the Jews? for in fact Peter alone had withdrawn himself. His object then is to remove suspicion from his rebuke; had he blamed Peter for observing the Law, the Jews would have censured him for his boldness towards their Teacher. But now arraigning him in behalf of his own peculiar disciples, I mean the Gentiles, he facilitates thereby the reception of what he has to say which he also does by abstaining ...
Neither let this phrase disturb you, for in using it he does not condemn Peter, but so expresses himself for the benefit of those who were to be reformed by the reproof of Peter.
Namely that they did not cease altogether from [observing] the tradition of the Law. As we already said, he spoke in this way on account of the economy; for the whole event was an economy, including the rebuke made by Paul, and the silence and condescension of Peter. For both of them sought one thing, namely, that those who believed in Christ should cease to observe the Law. “If you are a Jew and live as a pagan, and not as a Jew.” Namely, you do not keep the observance of the Law, but like those believers from the nations, you no longer keep the new months and the sabbaths. “How then do you force the nations to do this?” This too indicates the economy of this affair. Although he does not force you, nor does he attempt to persuade the nations to Judaize, Paul says that he does so that the rebuke addressed to Peter might be found to be a useful occasion to him with respect to his own disciples. By saying all this he educates the Galatians to easily cope with the weight of the rebuke for...