You're still a short distance from Jesus and Peter, who together have moved apart from the rest.
You enjoy listening to Jesus when he uses metaphors. He does it here, speaking of the belt used to tighten one's loose robes and make possible free movement. He reminds Peter that young men are able to dress themselves and go where they wish. But when people get old and feeble, they're dressed by another and led from place to place.
Jesus is obviously speaking of Peter's death, indicating that it would be by crucifixion (the victim was sometimes tied, not nailed to a cross).
You can tell by the look on Peter's face that this is not easy to hear. Jesus seemed to expect that when he said, "Someone else will fasten a belt around you and lead you where you do not want to go."
You're surprised at how calmly Jesus can speak of crucifixion. Difficult as it was, this doesn't seem to be an ugly memory for him. God transformed an awful death into a glorious resurrection. God can do that.
You interrupt for a moment and ask Jesus how to deal with an ugly memory, or how Peter is to deal with a fearful future. Peter joins your conversation.
- Little White Book, Diocese of Saginaw