Peter turned and saw Jesus’ favorite disciple following them. He was the same one who had sat next to Jesus at the meal and had asked, “Lord, who is going to betray you?” When Peter saw that disciple, he asked Jesus, “Lord, what about him?” Jesus answered, “What is it to you, if I want him to live until I return? You must follow me.”
(John 21:20-22 CEV)
Instead of doing what Jesus told him to do, Peter was looking back at the beloved disciple and asking about what Jesus wanted him to do. Therefore, Jesus had to correct Peter, “What is it to you, if I want him to live until I return?” and reminded him, “You must follow me.” It seems to me that in an indirect way, Jesus was telling Peter to mind his own business. I wonder how many times Jesus has to remind us to mind our own business too. We’re to focus on what He wants us to do and not on what He wants others to do.
Instead of being so interested in what other people are doing, we’re to focus on what we have to do.