He has blinded their eyes, and hardened their hearts; that they should not see with their eyes, nor understand with their hearts, and be converted, and I should heal them.
All Commentaries on John 12:40 Go To John 12
John Chrysostom
AD 407
Here again is another question, but it is not so if we rightly consider it. For as the sun dazzles the eyes of the weak, not by reason of its proper nature, so it is with those who give not heed to the words of God. Thus, in the case of Pharaoh, He is said to have hardened his heart, and so it is with those who are at all contentious against the words of God. This is a peculiar mode of speech in Scripture, as also the, He gave them over unto a reprobate mind Romans 1:28, and the, He divided them to the nations, that is, allowed, permitted them to go. For the writer does not here introduce God as Himself working these things, but shows that they took place through the wickedness of others. For, when we are abandoned by God, we are given up to the devil, and when so given up, we suffer ten thousand dreadful things. To terrify the hearer, therefore, the writer says, He hardened, and gave over. For to show that He does not only not give us over, but does not even leave us, except we will it, hear what He says, Do not your iniquities separate between Me and you? Isaiah 59:2, Septuagint. And again, They that go far away from You shall perish. Psalm 73:27, Septuagint And Hosea says, You have forgotten the law of your God, and I will also forget you Hosea 4:6, Septuagint; and He says Himself also in the Gospels, How often would I have gathered your children— and you would not. Luke 13:34 Esaias also again, I came, and there was no man; I called, and there was none to hearken. Isaiah 50:2, Septuagint These things He says, showing that we begin the desertion, and become the causes of our perdition; for God not only desires not to leave or to punish us, but even when He punishes, does it unwillingly; I will not, He says, the death of a sinner, so much as that he should turn and live. Ezekiel 18:32, Septuagint Christ also mourns over the destruction of Jerusalem, as we also do over our friends.
3. Knowing this, let us do all so as not to remove from God, but let us hold fast to the care of our souls, and to the love towards each other; let us not tear our own members, (for this is the act of men insane and beside themselves,) but the more we see any ill disposed, the more let us be kind to them. Since we often see many persons suffering in their bodies from difficult or incurable maladies, and cease not to apply remedies. What is worse than gout in foot or hand? Are we therefore to cut off the limbs? Not at all, but we use every means that the sufferer may enjoy some comfort, since we cannot get rid of the disease. This also let us do in the case of our brethren, and, even though they be diseased incurably, let us continue to tend them, and let us bear one another's burdens. So shall we fulfill the law of Christ, and obtain the promised good things, through the grace and lovingkindness of our Lord Jesus Christ, with whom to the Father and the Holy Ghost be glory for ever and ever. Amen.