But though he had done so many miracles before them, yet they believed not on him:
All Commentaries on John 12:37 Go To John 12
Augustine of Hippo
AD 430
It is evident here that the arm of the Lord is the Son of God Himself. Not that the Father has a human fleshly form; He is called the arm of the Lord, because all things v ere made by Him. If a man had power of such a kind, as that without any motion of his body, what he said was forthwith done, the word of that man would be his arm. Here is no ground to justify, however, the error of those who say that the Godhead is one Person only, because the Son is the arm of the Father, and a man and his arm are not two persons, but one. These men do not understand, that the commonest things require to be explained often by applying language to them taken from other things in which there happens to be a likeness, But some mutter, and ask, What fault was it of the Jews, if it was necessary that the sayings of Esaias should be fulfilled? We answer, that God, foreseeing the future, predicted by the Prophet the unbelief of the Jews, but did not cause it. God does not compel men to sin, because He knows they wills in. He foreknows their sins, not His own. The Jews committed the Sin, which He who knows all things foretold they would commit.
But what follows involved a deeper question: Therefore they could not believe, because that Esaias said again, He has blinded their eyes, and hardened their hearts, that they should not see with their eyes, nor understand with their heart, and be converted, and 1 should heal them. That they should not believe; but if so, what sin is there in a man doing what he cannot help doing? And what is a graver point still, the cause is assigned to God; since He it is who blinded their eyes, and hardened their heart. This is not said to be the devil’s doing, but God's. Yet if any ask why they could not believe, I answer, because they would not. For as itis to the praise of the Divine will that God cannot deny Himself, so is it the fault of the human will that they could not believe.
But the Prophet, you say, mentions another cause, not their will; viz. that God had blinded their eyes, and hardened their heart. But I answer, that they well deserved this. For God hardens and blinds a man, by forsaking and not supporting him; and this He may by a secret sentence, by an unjust one He cannot.
And be converted, and I should heal them. Is not to be understood here, from the beginning of the sentence - that they should not see with their eyes, nor understand with their hearts, nor be converted; conversion being the free gift of God? or, shall we suppose that a heavenly remedy is meant; whereby those who wished to establish their own righteousness, were so far deserted and blinded, as to stumble on the stumbling stone, till, with confusion of face, they humbled themselves, es, and sought not their own righteousness which puffs up the proud, but God’s righteousness, which justifies the ungodly. For many of those who put Christ to death, were afterward troubled with a sense of their guilt; which ledto their believing in Him. These things said Esaias, when he saw His glory, and spoke of Him. He saw Him not really, but figuratively, in prophetic vision. Be not deceived by those whosay that the Father is invisible, the Son visible, making the Son a creature. For in the form of God, in which He is equal to the Father, the Son also is invisible; though He took upon Him the form of a servant, that He might be seen by men. Before His incarnation too, He made Himself visible at times to human eyes; but visible through the medium of created matter, notvisible as He is.
As their faith grew, their love of human praise grew still more, and outstripped it.