| Geneva Study Bible {5} This is the disciple which testifieth of these things, and wrote these things: and we know that his testimony is true. (5) The history of Christ is truly and cautiously written: not for the curiosity of men, but for the salvation of the godly. People's New Testament 21:24 We know that his testimony is true. Many suppose the last two verses were added by another hand than John's, perhaps by the elders of the church at Ephesus, where John wrote, who give their endorsement to his record. Wesley's Notes 21:24 This is the disciple who testifieth - Being still alive after he had wrote. And we know that his testimony is true - The Church added these words to St. John's, Gospel, as Tertius did those to St. Paul's Epistle to the Romans, Rom 16:22. Jamieson-Fausset-Brown Bible Commentary Joh 21:24, 25. Final Close of This Gospel. 24. This is the disciple which testifieth of these things, and wrote these things-thus identifying the author of this book with all that it says of this disciple. we know that his testimony is true-(Compare Joh 19:35). Matthew Henry's Concise Commentary 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, 1Co 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. | 
