Homily on the Gospel of John 40
First then checking their disputatious spirit by setting forth what they would say, and showing that He knew the secrets of their hearts, and giving this first proof of His power, after stating the objection He supplieth other proofs clear and indisputable, producing three witnesses to what He said, namely, the works wrought by Him, the witness of the Father, and the preaching of John. And He putteth first the less important witness of John. For after saying, "There is another that beareth witness of Me, and I know that his witness is true," He addeth, "Ye sent unto John, and he bare witness unto the truth."
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Catena Aurea by Aquinas
In answer then, he puts forth three clear and irrefragable proofs, three witnesses as it were, to the truth of what He had said; the works which He had done, the testimony of the Father, and the preaching of John: putting the least of these foremost, i. e. the preaching of John: There is another that beareth witness of Me: and I know that the witness which he witnesseth of Me is true.
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Catena Aurea by Aquinas
(de Verb. Dom. s. 43) He knew Himself that His witness of Himself was true, but in compassion to the weak and unbelieving, the Sun sought for candles, that their weak sight might not be dazzled by His full blaze. And therefore John was brought forward to give his testimony to the truth. Not that there is such testimony really, for whatever witnesses bear witness to Him, it is really He who bears witness to Himself; as it is His dwelling in the witnesses, which moves them so to give their witness to the truth.
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Commentary on the Gospel of John, Book 2
The most wise Solomon, gathering together the things in which a man may very reasonably glory, and show his manner of life to be enviable, and placing them before those who are apt to learn, says, The righteous man is his own accuser in the opening of the trial, and again, Let thy neighbour praise thee and not thine own mouth, a stranger and not thine own lips. For a thing truly burdensome and most intolerable to the hearers, is it that some like not to be praised by the voice of others, but attest unrestrainedly their own most noble and excellent deeds. But with reason is such language distrusted; for we are wont to be invited by certain (so to speak) natural and necessary drawings of self-love, readily to ascribe to ourselves nought that is ill, but ever to put about us and not altogether truthfully, the things whereby any may be thought well-behaved and good.
When then our Lord Jesus Christ adjudged to Himself that He judgeth righteous judgments, saying openly that He could do nothing of Himself, but that He makes the Will of the Father His Rule in all His Actions, and in saying this, introduced Himself as witness to Himself, although it was true, yet of necessity considering the sophistry of the Pharisees, and what they would say in their folly (for they knew not that He is God by Nature): He anticipates them in putting it forward, and says, Ye following the practice of the common people, and not advancing beyond surmise befitting Jews, will surely say, THOU bearest record of Thyself, Thy record is not true; but ye shall hear this in reply (saith He), I endure yet with your blasphemies, I am by no means exceeding angry with you belching forth your words from the ignorance most dear to you, I grant you for argument's sake, that even this hath been well said by you: Be it so, ye reject My Voice, there is Another That beareth witness of Me. He here indicates God the Father Which is in heaven Who hath now in divers manners attested the Verity of the Essence of His Own Son; and He says that He knows that His witness is True showing that His Own Judgement too is in fact most trustworthy and true. For lest by admitting as it were that He said things untrue of Himself, He should give room for malice, and a loophole against Himself to them who are accustomed to think otherwise, He having ceded of necessity to what is becoming and customary, that one ought not altogether to credit as true him who praises and approves himself, returns again as God to His due position and says that He knows that the witness of the Father is true, all bat teaching this; I being Very God know Myself (says Ho), and the Father will say nothing of favour concerning Me. For I am Such by Nature, as He, being True, will declare Me. In the former part then there was an assent so to say of condescension, and the words hypothetic rather than true; in His saying that He knows that the witness of the Father is true, is the demonstration of God-befitting credibility.
But it must be observed that in respect of His Own Person the Father is Other than the Son, and is not, as some uninstructed heretics have imagined, introduced as the Son-Father.
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COMMENTARY ON JOHN 2.5.31-32
Since they were about to object to the words pronounced by our Lord about himself: “Your words are not true, nor worthy to be accepted, because you bear testimony about yourself”—since in their argument with him they were about to put forward this objection, our Lord forestalled them by saying, “You must not accept me as true, because I bear testimony to myself: this is what you undoubtedly mean. But you would have the right to say such a thing if I were the only one to bear testimony about myself. But now someone else said other things that were similar to my words about me, and he was a very trustworthy witness.”
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