Therefore they could not believe, because Isaiah said again,
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Cornelius a Lapide
AD 1637
Therefore they could not believe, because that Esaias said again, &c. The words "therefore" and "because" signify not the cause of their unbelief, as Calvin supposes, but marking the necessary consequence. It could not but be Song of Solomon , because it had been foretold, and Scripture cannot lie. But God foretold it, because He foresaw that through their freedom of will, their obstinacy and malice, they would not believe in Christ. God therefore saw that they would not believe, because they, of their own free will, would not do so. But they did not refuse to believe, because God foresaw that they would not believe. For their unbelief was prior to God"s foreseeing. God foresees the future, because it will surely come to pass. For God cannot foresee anything, unless it is presupposed that it will really take place. For the object which is seen is prior to the act of seeing it. For nothing can be seen but that which either now Isaiah , or hereafter will be. So S. Chrysostom, Jansenius, ...
It was not however with intent to fulfil the prophecies that the Jews slew the Lord, for in that case they would not have been impious; but it was by reason of their own malignity. For although the prophets foretold the things which were certainly to be brought to pass by their determined evil counsel, they foretold it for this cause, that the sober might leap over the pitfalls of the devil: for surely they who heard might also have taken heed. On which, account also the prediction was needful.
That it was not God Who blinded the Jews. For else He would not have required them to give account thereof, forasmuch as He surely pardons involuntary offences. But the meaning is on this wise. It is just as though Isaiah were setting before us, as having been spoken by God, the words: "If I should become a Man, and with Mine own voice expound unto you what is profitable, not even so will ye hearken unto Me, as neither did ye hearken unto the prophets; neither, when ye see signs beyond descri...
They could not believe, that is, they would not, says St. Augustine, or it could not be, considering their wilful obstinate blindness. (Witham)
But where then is the sin, if they could not believe? They could not believe, because they would not. For as it is the glory of the will of God, that it cannot be averse to its own glory, so it is the fault of the will of man, that it cannot believe. (St. Augustine, tract. 53. in Joan.) They could not believe. Since the prophet has foretold it, and he cannot but say the truth, it is impossible that they should now believe. Not but they had it in their power to believe; and had they believed, the prophet would never have foretold the contrary. (St. Chrysostom, hom. lxvii. in Joan.)
Here again observe, that the because, and spoke, refer not to the cause of their unbelief, but to the event. For it was not because Isaiah spoke, that they believed not; but because they were not about to believe, that he spoke. Why then does not the Evangelist express it so, instead of making the unbelief proceed from the prophecy, not the prophecy from the unbelief? And farther on he puts this very thing more positively, saying, Therefore they could not believe, because that Esaias said. He desires hence to establish by many proofs the unerring truth of Scripture, and that what Isaiah foretold fell not out otherwise, but as he said. For lest any one should say, Wherefore did Christ come? Knew he not that they would give no heed to him? he introduces the Prophets, who knew this also. But He came that they might have no excuse for their sin; for what things the Prophet foretold, he foretold as certainly to be; since if they were not certainly to be, he could not have foretold them; and...