Галатам 2:13

the other--Greek, "the rest." Jews--Jewish Christians. dissembled likewise--Greek, "joined in hypocrisy," namely, in living as though the law were necessary to justification, through fear of man, though they knew from God their Christian liberty of eating with Gentiles, and had availed themselves of it already (Acts 11:2-17). The case was distinct from that in 1Co. 8:1-10:33; Rom. 14:1-23. It was not a question of liberty, and of bearing with others' infirmities, but one affecting the essence of the Gospel, whether the Gentiles are to be virtually "compelled to live as do the Jews," in order to be justified (Gal 2:14). Barnabas also--"Even Barnabas": one least likely to be led into such an error, being with Paul in first preaching to the idolatrous Gentiles: showing the power of bad example and numbers. In Antioch, the capital of Gentile Christianity and the central point of Christian missions, the controversy first arose, and in the same spot it now broke out afresh; and here Paul had first to encounter the party that afterwards persecuted him in every scene of his labors (Act 15:30-35).

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.

2:13 Peter’s hypocrisy drew other Jewish believers into error regarding the Good News.