In yesterday's Gospel reading from John 21, Jesus signified to Peter the kind of death by which he would glorify God. In today's reading from the same chapter, Peter asked Jesus what would happen to John, the other disciple, Jesus said to Peter, "What if I want him to remain until I come? What concern is it of yours? You follow me." Here was given the succinct rule for following the Lord: we must follow him single-mindedly with no concern about the future of anyone or anything.