1 Corinthians 9:20

You do not require me to teach you in what sense the apostle says, "To the Jews I became as a Jew, that I might gain the Jews," and other such things in the same passage, which are to be ascribed to the compassion of pitying love, not the artifices of intentional deceit. For he that ministers to the sick becomes as if he were sick himself; not, indeed, falsely pretending to be under the fever, but considering, with the mind of one truly sympathizing, what he would wish done for himself if he were in the sick man's place. Paul was indeed a Jew; and when he had become a Christian, he had not abandoned those Jewish sacraments which that people had received in the right way, and for a certain appointed time. Therefore, even although he was an apostle of Christ, he took part in observing these; but with this view, that he might show that they were in no wise hurtful to those who, even after they had believed in Christ, desired to retain the ceremonies which by the law they had learned from their fathers; provided only that they did not build on these their hope of salvation, since the salvation which was foreshadowed in these has now been brought in by the Lord Jesus. For the same reason, he judged that these ceremonies should by no means be made binding on the Gentile converts, because, by imposing a heavy and superfluous burden, they might turn aside from the faith those who were unaccustomed to them.

Did Paul merely pretend to be all things to all men, in the way that flatterers do? No. He was a man of God and a doctor of the spirit who could diagnose every pain, and with great diligence he tended them and sympathized with …

But, inasmuch as our very perverse cavillers obtrude the rebuke in question for the set purpose of bringing the earlier doctrine into suspicion, I will put in a defence, as it were, for Peter, to the effect that even Paul said that he was "made all things to all men-to the Jews a Jew," to those who were not Jews as one who was not a Jew-"that he might gain all." Therefore it was according to times and persons and causes that they used to censure certain practices, which they would not hesitate themselves to pursue, in like conformity to times and persons and causes.

"For not only for the Hebrews and those that are under the law "according to the apostle, "is it right to become a Jew, but also a Greek for the sake of the Greeks, that we may gain all.". Also in the Epistle to the Colossians he writes, "Admonishing every man, and teaching every man in all wisdom, that we may present every man perfect in Christ.". Let a man milk the sheep's milk if he need sustenance: let him shear the wool if he need clothing. And in this way let me produce the fruit of the Greek erudition. , that evil has an evil nature, and can never turn out the producer of aught that is good; indicating that philosophy is in a sense a work of Divine Providence.

"And I became," says he, "to the Jews as a Jew, that I might gain Jews." And how did this take place? When he circumcised that he might abolish circumcision. Wherefore he said not, "a Jew," but, "as a Jew," which was a wise arrangement. What sayest thou? The herald of the world and he who touched the very heavens and shone so bright in grace, doth he all at once descend so low? Yea. For this is to ascend. For you are not to look to the fact only of his descending, but also to his raising up him that was bowed down and bringing him up to himself. "To them that are under the law, as under the law, not being myself under the law, that I might gain them that are under the law." Either it is the explanation of what went before, or he hints at some other thing besides the former: calling those Jews, who were such originally and from the first: but "under the law," the proselytes, or those who became believers and yet adhered to the law. For they were no longer as Jews, yet "under the law." And when was he under the law? When he shaved his head; when he offered sacrifice. Now these things were done, not because his mind changed, (since such conduct would have been wickedness,) but because his love condescended. For that he might bring over to this faith those who were really Jews, he became such himself not really, showing himself such only, but not such in fact nor doing these things from a mind so disposed. Indeed, how could he, zealous as he was to convert others also, and doing these things only in order that he might free others who did them from that degradation?