John 21:24

(Hom. lxxxviii. 2) John appeals to his own knowledge of these events, having been witness of them: This is the disciple which testifieth of these things. When we assert any undoubted fact in common life, we do not withhold our testimony: much less would he, who wrote by the inspiration of the Holy Ghost. (Acts 2:32) And thus the other Apostles, And we are witnesses of these things, and wrote these things. John is only one who appeals to his own testimony; and he does so, because he was the last who wrote. And for this reason he often mentions Christ's love for him, i. e. to show the motive which led him to write, and to give weight to his history. And we know that his testimony is true. He was present at every event, even at the crucifixion, when our Lord committed His mother to him; circumstances which both show Christ's love, and his own importance as a witness. But if any believe not, let him consider what follows: And there are also many other things which Jesus did. If, when there were so many things to relate, I have not said so much as the other, and have selected often reproaches and contumelies in preference to other things, it is evident that I have not written partially. One who wants to show another off to advantage does the very contrary, omits the dishonourable parts. (Hom. lxxxviii) This is said to show the power of Him Who did the miracles; i. e. that it was as easy for Him to do them, as it is for us to speak of them, seeing He is God over all, blessed for ever.

"This is the disciple which testifieth of these things, and wrote these things, and we know that his testimony is true." Why is it, that then, when none of the others do so, he alone uses these words, and that for the second time, witnessing to himself? for it seems to be offensive to the hearers. What then is the cause? He is said to have been the last who came to writing, Christ having moved and roused him to the work; and on this account he continually sets forth his love, alluding to the cause by which he was impelled to write. Therefore also he continually makes mention of it, to make his record trustworthy, and to show, that, moved from thence, he came to this work. "And I know," he saith, "that the things are true which he saith. And if the many believe not, it is permitted them to believe from this."

"Whence it is clear that I could not have written to court favor; for I who, when the miracles were so many, have not even related so many as the others have, but omitting most of them, have brought forward the plots of the Jews, the stonings, the hatred, the insults, the revilings, and have shown how they called Him a demoniac and a deceiver, certainly could not have acted to gain favor. For it behooved one who courted favor to do the contrary, to reject the reproachful, to set forth the glorious." Since then he wrote what he did from full assurance, he does not decline to produce his own testimony, challenging men separately to enquire into and scrutinize the circumstances. For it is a custom with us, when we think that we are speaking exactly true, never to refuse our testimony; and if we do this, much more would he who wrote by the Spirit. What then the other Apostles when they preached declared, he also saith; "We are witnesses of the things spoken, and the Spirit which He hath given to them that obey Him." And besides, he was present at all, and did not desert Him even when being crucified, and had His mother entrusted to him; all which things are signs of his love for Him, and of his knowing all things exactly.