John and the other apostles saw themselves positioned as elites in the Kingdom of God Jesus was establishing. However, when their words and actions bring this to Jesus' attention, he rebukes them. He reminds them that they are disciples not the master. As disciples, it is their place to serve Jesus along with others Jesus may call into service. If John or even Peter get in the way of the service others are offering to Jesus, it is John or Peter who is at risk of being "cut off" from the Kingdom, and from eternal life. The warning is to all of us: "be at peace with one another."