21:22 If I will that he tarry till I come. This is spoken of John, and the words have caused much discussion. They surely convey the idea that John would remain on the earth, after the other apostles depart, until the Lord came once more. He did linger long after all the other apostles were gone. It is the testimony of church history that he did not die until about the close of the first century, many years after the other apostles were at rest. He tarried; did the Lord come to him? At least sixty years after the Lord spoke these words John was an exile on the isle of Patmos. There on the Lord's day he writes: I heard a great voice (Re 1:10), and I saw one like the Son of man (Re 1:13), blazing in such glory that, filled with awe, he fell at his feet as dead (Re 1:17). Then follow these words of the Savior, the seven letters, and the visions of Revelation. Here was a visible coming and John tarried until that coming. He alone of the Twelve saw the Lord, after his ascension, once more on the earth.
21:22 If I will that he tarry - Without dying, till I come - To judgment. Certainly he did tarry, till Christ came to destroy Jerusalem. And who can tell, when or how he died? What is that to thee? - Who art to follow me long before.
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.