John 12:40

(Hom. lxviii) For He does not leave us, except we wish Him, as He saith in Hosea, Seeing thou hast forgotten the law of thy God, I will also forget thy children. (Hos. 4:6) Whereby it is plain that we begin to forsake first, and are the cause of our own perdition. For as it is not the fault of the sun, that it hurts weak eyes, so neither is God to blame for punishing those who do not attend to His words.

(Tr. liii. 5) 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. (Tr. liii. 11) 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, and sought not their own righteousness which puffeth up the proud, but God's righteousness, which justifieth the ungodly. For many of those who put Christ to death, were afterward troubled with a sense of their guilt; which led to their believing in Him.

But the prophet, sayest thou, assigns another cause than that of their will. What cause does the prophet assign? That "God hath given them the spirit of remorse, eyes that they should not see, and ears that they should not hear; and hath blinded their eyes, and hardened their heart." This also, I reply, their will deserved. For God thus blinds and hardens, simply by letting alone and withdrawing His aid: and God can do this by a judgment that is hidden, although not by one that is unrighteous. This is a doctrine which the piety of the God-fearing ought to preserve unshaken and inviolable in all its integrity: even as the apostle, when treating of the same intricate question, says, "What shall we say then? is there unrighteousness with God? God forbid." If, then, we must be far from thinking that there is unrighteousness with God, this only can it be, that, when He giveth His aid, He acteth mercifully; and, when He withholdeth it, He acteth righteously: for in all He doeth, He acteth not rashly, but in accordance with judgment.

(Tr. liii. 5) But what follows involved a deeper question: Therefore they could not believe, because that Esaias said again, He hath blinded their eyes, and hardened their hearts, that they should not see with their eyes, nor understand with their heart, and be converted, and I 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 it is 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 words of the Gospel also, that follow, are still more pressing, and start a question of more profound import: for He goes on to say, "Therefore they could not believe, because that Isaiah said again, He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them." For it is said to us: If they could not believe, what sin is it in man not to do what he cannot do and if they sinned in not believing, then they had the power to believe, and did not use it. If, then, they had the power, how says the Gospel, "Therefore they could not believe, because that Isaiah said again, He hath blinded their eyes, and hardened their heart;" so that (which is of grave import) to God Himself is referred the cause of their not believing, inasmuch as it is He who "hath blinded their eyes, and hardened their heart"? "They could not believe," because that Isaiah the prophet foretold it; and the prophet foretold it because God foreknew that such would be the case. But if I am asked why they could not, I reply at once, because they would not; for certainly their depraved will was foreseen by God, and foretold through the prophet by Him from whom nothing that is future can be hid.