Galatians 2:12

For before that certain came from James
The Lord's brother, mentioned before with Cephas and John, who resided at Jerusalem, from whence these persons came; and who are said to come from James, because they came from the place and church where he was, though, it may be, not sent by him, nor with his knowledge. They were such as professed faith in Christ; they were "judaizing" Christians believing in Christ, but were zealous of the law. Now before the coming of these persons to Antioch,

he,
Peter,

did eat with the Gentiles;
which is to be understood, not of eating at the Lord's table with them, but at their own tables: he knew that the distinction of meats was now laid aside, and that nothing was common and unclean of itself, and that every creature of God was good, and not to be refused if received with thankfulness; wherefore he made use of his Christian liberty, and ate such food dressed in such manner as the Gentiles did, without any regard to the laws and ceremonies of the Jews; and in this he did well, for hereby he declared his sense of things, that the ceremonial law was abolished, that not only the Gentiles are not obliged to it, but even the Jews were freed from it, and that the observance of it was far from being necessary to salvation: all which agreed with the preaching and practice of the Apostle Paul, and served greatly to confirm the same, and for this he was to be commended: nor is this mentioned by way of blame, but for the sake of what follows, which was blameworthy:

but when they were come he withdrew and separated himself;
not from the church, and the communion of it, for then he had been guilty of schism, but from private conversation with the Gentiles: he did not visit them in their own houses, and sit down at table and eat with them, as he was wont to do; which argued great inconstancy and instability, very unbecoming one that seemed to be, and was a pillar in the church of God, as well as much dissimulation, for he knew better than he acted; his conduct did not agree with the true sentiments of his mind, which he covered and dissembled; and which must be very staggering to the believing Gentiles, to see so great a man behave in such a manner towards them, as if they were persons not fit to converse with, and as if the observance of Jewish rites and ceremonies was necessary to salvation. What induced him to take such a step was, his

fearing them which were of the circumcision:
that is, the circumcised Jews, who professed faith in Christ, and were just now come from Jerusalem; not that he feared any danger from them; that they would abuse his person, or take away his life; but he might either fear he should come under their censure and reproofs, as he formerly had for going to Cornelius, and eating with him and his; or lest that they should be offended with him, and carry back an ill report of him, as not acting up to his character as an apostle of the circumcision. This led him into such a conduct; so true is that of the wise man, that "the fear of man bringeth a snare", ( Proverbs 29:25 ) .