Galatians 1:19

"But other of the Apostles saw I none, save James, the Lord's brother." See what great friends he was with Peter especially; on his account he left his home, and with him he tarried. This I frequently repeat, and desire you to remember, that no one, when he hears what this Apostle seems to have spoken against Peter, may conceive a suspicion of him. He premises this, that when he says, "I resisted Peter," no one may suppose that these words imply enmity and contention; for he honored and loved his person more than all and took this journey for his sake only, not for any of the others. "But other of the Apostles saw I none, save James." "I saw him merely, I did not learn from him," he means. But observe how honorably he mentions him, he says not "James" merely, but adds this illustrious title, so free is he from all envy. Had he only wished to point out whom he meant, he might have shown this by another appellation, and called him the son of Cleophas, as the Evangelist does. But as he considered that he had a share in the august titles of the Apostles, he exalts himself by honoring James; and this he does by calling him "the Lord's brother," although he was not by birth His brother, but only so reputed. Yet this did not deter him from giving the title; and in many other instances he displays towards all the Apostles that noble disposition, which beseemed him.