Then after fourteen years I went up again to Jerusalem with Barnabas, and took Titus with me also.
All Commentaries on Galatians 2:1 Go To Galatians 2
Ambrosiaster
AD 400
His renown had been growing for a long time among all the Jews, though he had not been seen face to face … but on account of the law he had acquired a bad reputation among the Jews, as though his preaching was out of harmony with the preaching of the other apostles. Many were having doubts on account of this, which were sufficient to make the Gentiles anxious, in case they had been trained in something other than that which was preached by the apostles who had been with the Lord. For on this precise occasion the Galatians were undermined by Jews who were saying that Paul taught something other than Peter taught. This is the reason for his going up to Jerusalem, at the bidding of the Lord’s revelation, disclosing to them the implications of his preaching, with Barnabas and Titus as witnesses of his preaching, one from the Jews and one from the Gentiles, so that if any took offense at him it might be assuaged by their testimony. .