Now about the middle of the feast Jesus went up into the temple, and taught.
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Augustine of Hippo
AD 430
The feast seems, as far as we can judge, to have lasted several days. And therefore it is said, "about the middle of the feast day:” i.e. when as many days of that feast had passed, as wereto come. So that His assertion, I go not up yet to this feast day, (i.e. to the first or second day, as you would wish me,) was strictly fulfilled. For He went up afterwards, about the middle of the feast.
In going there too, He went up, not to the feast day, but to the light. They had gone to enjoy the pleasures of the festival, but Christ’s feast day was that on which by His Passion He redeemed the world.
He who had before concealed Himself, taught and spoke openly, and was not laid hold on. The one was intended for an example to us, the other to testify His power.
All, it would appear, admired, but all were not converted. Whence then the admiration? Many knew where here He was born, and how He had been educated; but had never seen Him learning letters. Yet now they heard Him disputing on the law, and bringing forward its testimonies. No one could do this, who had not read the law; no one could read who had not learnt letters; and this raised their wonder.
Mine is not mine, appears a contradiction; why did He not say, This doctrine is not Mine? Because the doctrine of the Father being the Word of the Father, and Christ Himself being that Word, Christ Himself is the doctrine of the Father. And therefore He calls the doctrine both His own, and the Father’s. A word must be a word of someone’s. What is so much Yours as You, and what is so much not Yours as You, if what You are, You art of another. His saying then, My doctrine is not Mine own, seems briefly to express the truth, that He is not from Himself; it refuses the Sabellian heresy, which dares to assert that the Son is the same as the Father, there being only two names for one thing.
Or thus: In one sense He calls it His, in another sense not His; according to the form of the Godhead His, according to the form of the servant not His.
Should any one however not understand this, let him hear the advice which immediately follows from our Lord: If any man will do His will, he shall know of the doctrine, whether it be of God, or whether I speak of Myself. What means this, If any man will do His will? To do His will is to believe in Him, as He Himself says, This is the work of God, that you believe in Him whom He has sent. And who does not know, that to work the work of God, is to do His will? To know is to understand. Do not then seek to understand in order to believe, but believe in order to understand, for, Except you believe, you shall not understand.
He who seeks his own glory is Antichrist. But our Lord set us an example of humility, in that being found in fashion as a man, He sought His Father’s glory, not His own. You, when you do good, take glory to yourself, when you do evil, upbraid God.