John 21 concludes this chapter and story of Jesus's life, death and resurrection.  The disciples decide to go back to their profession of fishing, but catch nothing after fishing all night.  Christ appears to them on the shore, and after a miraculous catch of fish, they recognize who he is.  Christ commands Peter to watch over his sheep, his people, and tells him the manner in which he will die.  The disciple whom Jesus loved, John, concludes by affirming he wrote the book and while it tells Jesus' story, it doesn't tell everything he did.