 
Not to be confused with John the Baptist, the Apostle John is the brother of 
James,  another of the twelve disciples of Jesus. Together, they were called by  Jesus “Boanerges,” which means “sons of thunder,” and therein we find a  key to John’s personality. Both brothers were characterized by zeal,  passion and ambition. In his early days with Jesus, at times John acted  rashly, recklessly, impetuously, and aggressively. We see him in 
Mark 9 forbidding a man to cast out demons in Jesus’ name because he was not part of the twelve (
Mark 9:38-41). Jesus gently rebuked him, saying no one could cast out demons in Jesus’ name and then turn around and speak evil of Him. In 
Luke 9:51-54, we see the brothers wanting  to call down fire from heaven to destroy the Samaritans who refused to  welcome Jesus. Again, Jesus had to rebuke them for their intolerance and  lack of genuine love for the lost.  John’s zeal for Jesus was also influenced by his natural ambition, as  seen in his request (through his mother) that he and his brother be  seated on Jesus’ right and left hands in the kingdom, an incident that  caused a temporary rift between the brothers and the other disciples (
Matthew 20:20-24).