Calling and Inner Circle
James and John were sons of Zebedee, a fisherman of Galilee, and were themselves engaged in their father's trade when the Lord summoned them to follow Him. Together with the Apostle Peter, the two brothers formed an inner group among the Twelve who were admitted to events from which the other apostles were absent.
These three alone witnessed the raising of the daughter of Jairus, beheld the Lord's Transfiguration on Mount Tabor, and remained near Him during His agony in the Garden of Gethsemane. The name Boanerges, 'Sons of Thunder,' which the Lord gave to James and John, is recorded in the Gospel of Mark and is understood in the tradition as a reference to the zeal and fervor of the two brothers.