15 After breakfast, Jesus said to Simon Peter, "Simon, son of John, do you love me more than these?" "Yes, Master, you know I love you." Jesus said, "Feed my lambs." 16 He then asked a second time, "Simon, son of John, do you love me?" "Yes, Master, you know I love you." Jesus said, "Shepherd my sheep." 17 Then he said it a third time: "Simon, son of John, do you love me?" Peter was upset that he asked for the third time, "Do you love me?" so he answered, "Master, you know everything there is to know. You've got to know that I love you." 18 I'm telling you the very truth now: When you were young you dressed yourself and went wherever you wished, but when you get old you'll have to stretch out your hands while someone else dresses you and takes you where you don't want to go." 19 He said this to hint at the kind of death by which Peter would glorify God. And then he commanded, "Follow me."
20 Turning his head, Peter noticed the disciple Jesus loved following right behind. 21 When Peter noticed him, he asked Jesus, "Master, what's going to happen to him?" 22 Jesus said, "If I want him to live until I come again, what's that to you? You - follow me." 23 That is how the rumor got out among the brothers that this disciple wouldn't die. But that is not what Jesus said. He simply said, "If I want him to live until I come again, what's that to you?" 24 This is the same disciple who was eyewitness to all these things and wrote them down. And we all know that his eyewitness account is reliable and accurate. 25 There are so many other things Jesus did. If they were all written down, each of them, one by one, I can't imagine a world big enough to hold such a library of books.
Matthew Henry's Commentary on John 21:15-25
Commentary on John 21:15-19
(Read John 21:15-19)
Our Lord addressed Peter by his original name, as if he had forfeited that of Peter through his denying him. He now answered, Thou knowest that I love thee; but without professing to love Jesus more than others. We must not be surprised to have our sincerity called into question, when we ourselves have done that which makes it doubtful. Every remembrance of past sins, even pardoned sins, renews the sorrow of a true penitent. Conscious of integrity, Peter solemnly appealed to Christ, as knowing all things, even the secrets of his heart. It is well when our falls and mistakes make us more humble and watchful. The sincerity of our love to God must be brought to the test; and it behoves us to inquire with earnest, preserving prayer to the heart-searching God, to examine and prove us, whether we are able to stand this test. No one can be qualified to feed the sheep and lambs of Christ, who does not love the good Shepherd more than any earthly advantage or object. It is the great concern of every good man, whatever death he dies, to glorify God in it; for what is our chief end but this, to die to the Lord, at the word of the Lord?
Commentary on John 21:20-24
(Read John 21:20-24)
Sufferings, pains, and death, will appear formidable even to the experienced Christian; but in the hope to glorify God, to leave a sinful world, and to be present with his Lord, he becomes ready to obey the Redeemer's call, and to follow Him through death to glory. It is the will of Christ that his disciples should mind their own duty, and not be curious about future events, either as to themselves or others. Many things we are apt to be anxious about, which are nothing to us. Other people's affairs are nothing to us, to intermeddle in; we must quietly work, and mind our own business. Many curious questions are put about the counsels of God, and the state of the unseen world, as to which we may say, What is this to us? And if we attend to the duty of following Christ, we shall find neither heart nor time to meddle with that which does not belong to us. How little are any unwritten traditions to be relied upon! Let the Scripture be its own interpreter, and explain itself; as it is, in a great measure, its own evidence, and proves itself, for it is light. See the easy setting right such mistakes by the word of Christ. Scripture language is the safest channel for Scripture truth; the words which the Holy Ghost teaches, 1 Corinthians 2:13. Those who cannot agree in the same terms of art, and the application of them, may yet agree in the same Scripture terms, and to love one another.
Commentary on John 21:25
(Read John 21:25)
Only a small part of the actions of Jesus had been written. But let us bless God for all that is in the Scriptures, and be thankful that there is so much in so small a space. Enough is recorded to direct our faith, and regulate our practice; more would have been unnecessary. Much of what is written is overlooked, much forgotten, and much made the matter of doubtful disputes. We may, however, look forward to the joy we shall receive in heaven, from a more complete knowledge of all Jesus did and said, as well as of the conduct of his providence and grace in his dealings with each of us. May this be our happiness. These are written that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through his name, 31.