This is the disciple who testifies of these things, and wrote these things: and we know that his testimony is true.
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Augustine of Hippo
AD 430
The which, if they should be written every one, I suppose that even the world itself could not contain the books that should, be written; meaning not the world had not space for them, but that the capacity of readers was not large enough to hold them: though sometimes words themselves may exceed the truth, and yet the thing they express be true; a mode of speech which is used not to explain an obscure and doubtful, but to magnify or estimate a plain, thing: nor does it involve any departure from the path of truth; inasmuch as the excess of the word over the truth is evidently only a figure of speech, and not adeception. This way of speaking the Greeks call hyperbole, and it is found in other parts of Scripture.
This is that disciple, &c, viz. John , who for the sake of modesty speaks of himself in the third person. As though he said, "This is not the testimony of myself alone, but I, and all who have been conversant with Christ, all who have been their hearers and disciples, know that this disciple testifies and writes the truth. For at that time there were but few survivors of those who had conversed with Christ, but many survived who had beard the same things from them. For John wrote this Gospel against Cerinthus, Meander, Ebion, and other rising heretics, who denied that Christ was God, and therefore detracted from His preaching and Gospel, as though it were false and feigned.
There are also many other things, &c. After the words the world itself, the Syriac version adds, as I think. First, S. Augustine, Bede, S. Thomas, and others explain the words, the world itself could not contain the books, not of local space, but of the capacity of readers. As it were, "The whole world could not re...
I think no wise man will doubt that the Lord would not have loved John if he had not been specially remarkable for virtue, and apt and perfectly equipped for every good work. For God can never be found to be inclined by any irrational leanings to those unworthy of His love, for such affections are more worthy of men. And He that was wholly proof against every assault and inroad of passion, and trod firmly in the path of every virtue, nay rather, was Virtue itself in all its forms, most assuredly would act in this, too, with judgment, and have His inclination free from all reproach----I mean, the inclination which led Him to deem him to whom this boon was due worthy of His love. After this admirable preface, then, and after having said that he was beloved, he modestly and with great humility says that he testified of these things; well and admirably inviting his hearers, as a necessary consequence, to assent to the things which he had written, and of which he had testified; for the prea...
This is that disciple Some conjecture, that these words were added by the Church of Ephesus. But the ancient Fathers, St. Chrysostom, St. Cyril, St. Augustine, expound them as they do the rest, without any such remark. Nor is it unusual for a person to write in this manner of himself, as of a third person. It is what St. John hath done of himself, chap. xix. ver. 35. (Witham)
Some conjecture, that these words were added by the Church of Ephesus, to point out St. John to be the real author of this history, and to record their own assent to this his testimony. But the ancient Fathers give no such comment. Nor is it unusual for a person to write of himself, as of a third person. It is what St. John hath done before.
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 says, that the things are true which he says. And if the many believe not, it is permitted them to believe from this. From what? From that which is said next.
The Evangelist then corrects the opinion taken up by the disciples.
John appeals to his own knowledge of these events, having been witness of them: This is the disciple which testifies 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 Spirit. 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 hedoes 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 thi...