Caravaggio, The Crucifixion of Saint Peter. Oil on canvas, circa 1600. J. C. Ryle has some really great comments on John 21.  As for Jesus' foretelling of Peter's future, he writes,  "We learn, for one thing, from these verses, that the future history of Christians, both in life and death, is foreknown by Christ. The Lord tells Simon Peter, “When thou art old, thou shalt stretch forth thy hands, and another shall gird thee, and carry thee whither thou wouldest not.” These words, without controversy, were a prediction of the manner of the Apostle’s death. ... The truth before us is eminently full of comfort to a true believer ... it is an unspeakable consolation to remember, that our whole future is known and forearranged by Christ. There is no such thing as luck, chance, or accident, in the journey of our life. Everything from beginning to end is foreseen,—arranged by One who is too wise to err, and too loving to do us harm. Let us store up this truth in