Galatians 2:3

But--So far were they from regarding me as running in vain, that "not even Titus who was with me, who was a Greek (and therefore uncircumcised), was compelled to be circumcised." So the Greek should be translated. The "false brethren," Gal 2:4 ("certain of the sect of the Pharisees which believed," Act 15:5), demanded his circumcision. The apostles, however, constrained by the firmness of Paul and Barnabas (Gal 2:5), did not compel or insist on his being circumcised. Thus they virtually sanctioned Paul's course among the Gentiles and admitted his independence as an apostle: the point he desires to set forth to the Galatians. Timothy, on the other hand, as being a proselyte of the gate, and son of a Jewess (Act 16:1), he circumcised (Act 16:3). Christianity did not interfere with Jewish usages, regarded merely as social ordinances, though no longer having their religious significance, in the case of Jews and proselytes, while the Jewish polity and temple still stood; after the overthrow of the latter, those usages naturally ceased. To have insisted on Jewish usages for Gentile converts, would have been to make them essential parts of Christianity. To have rudely violated them at first in the case of Jews, would have been inconsistent with that charity which (in matters indifferent) is made all things to all men, that by all means it may win some (Co1 9:22; compare Rom 14:1-7, Rom 14:13-23). Paul brought Titus about with him as a living example of the power of the Gospel upon the uncircumcised heathen.

The apostle, in this chapter, continues the relation of his past life and conduct, which he had begun in the former; and, by some further instances of what had passed between him and the other apostles, makes it appear that he was not beholden to them either for his knowledge of the gospel or his authority as an apostle, as his adversaries would insinuate; but, on the contrary, that he was owned and approved even by them, as having an equal commission with them to this office. I. He particularly informs them of another journey which he took to Jerusalem many years after the former, and how he behaved himself at that time (Gal 2:1-10). And, II. Gives them an account of another interview he had with the apostle Peter at Antioch, and how he was obliged to behave himself towards him there. From the subject-matter of that conversation, he proceeds to discourse on the great doctrine of justification by faith in Christ, without the works of the law, which it was the main design of this epistle to establish, and which he enlarges more upon in the two following chapters.

2:3 The Jerusalem apostles affirmed Paul’s message without qualification. They stood together on the same Good News—that God’s grace comes through faith in Christ, not through keeping the law. Clearly the Jerusalem apostles did not think that circumcision was necessary for a Gentile like Titus.