James worked in the family fishing business with his father Zebedee and his brother John and was associated with
Simon Peter. Jesus called James and John from their boat, and they left their father and work to follow Him. Jesus later named the brothers 'Boanerges,' sons of thunder, a title consistent with episodes revealing their intensity. James became one of the Twelve and, with Peter and John, formed the inner group present at several especially important moments: the raising of Jairus' daughter, the Transfiguration, and Jesus' prayer in Gethsemane. James and John once wanted to call down fire on a Samaritan village that rejected Jesus, and they also sought places of honor in His kingdom, prompting Jesus to teach that greatness comes through service and that His followers must share His cup of suffering. James was present with the apostolic community after the resurrection. Acts 12 records that
Herod Agrippa I had James, the brother of John, killed with the sword, making him the first of the Twelve whose martyrdom is explicitly recorded in the New Testament. Later traditions about his travel to Spain are not part of the biblical account.