Romans 11:8

8.Given them has God, etc. There is no doubt, I think, but that the passage quoted here from Isaiah is that which Luke refers to in Acts 28:26, as quoted from him, only the words are somewhat altered. Nor does he record here what we find in the Prophet, but only collects from him this sentiment, — that they were imbued from above with the spirit of maliciousness, so that they continued dull in seeing and hearing. The Prophet was indeed bidden to harden the heart of the people: but Paul penetrates to the very fountain, — that brutal stupor seizes on all the senses of men, after they are given up to this madness, so that they excite themselves by virulent stimulants against the truth. For he does not call it the spirit of giddiness, but of compunction, when the bitterness of gall shows itself; yea, when there is also a fury in rejecting the truth. And he declares, that by the secret judgment of God the reprobate are so demented, that being stupified, they are incapable of forming a judgment; for when it is said, that by seeing they see nothing, the dullness of their senses is thereby intimated. (347)

Then Paul himself adds, to this very day, lest any one should object and say, that this prophecy had been formerly fulfilled, and that it was therefore absurd to apply it to the time of the gospel: this objection he anticipates, by subjoining, that it was not only a blindness of one day, which is described, but that it had continued, together with the unhealable obstinacy of the people, to the coming of Christ. (348)