John 12:37-41

Verse 37

Yet they believed not on him - Though the miracles were wrought for this very purpose, that they might believe in Christ, and escape the coming wrath, and every evidence given that Jesus was the Messiah, yet they did not believe; but they were blinded by their passions, and obstinately hardened their hearts against the truth.
Verse 38

That the saying of Esaias - Or, Thus the word of Isaiah was fulfilled. So I think ἱνα (commonly rendered that) should be translated. For it certainly does not mean the end the Pharisees had in view by not believing; nor the end which the prophet had in view in predicting the incredulity of the Jews; but simply, such a thing was spoken by the prophet, concerning the Jews of his own time, and it had its literal fulfillment in those of our Lord's time.

Our report - The testimony of the prophets, concerning the person, office, sufferings, death, and sacrifice of the Messiah. See Isa 53:1, etc.

The arm of the Lord - The power, strength, and miracles of Christ.
Verse 39

Therefore they could not believe - Why? Because they did not believe the report of the prophets concerning Christ; therefore they credited not the miracles which he wrought as a proof that he was the person foretold by the prophets, and promised to their fathers. Having thus resisted the report of the prophets, and the evidence of Christ's own miracles, God gave them up to the darkness and hardness of their own hearts, so that they continued to reject every overture of Divine mercy; and God refused to heal their national wound, but, on the contrary, commissioned the Romans against them, so that their political existence was totally destroyed.

The prophecy of Isaiah was neither the cause nor the motive of their unbelief: it was a simple prediction, which imposed no necessity on them to resist the offers of mercy. They might have believed, notwithstanding the prediction, for such kinds of prophecies always include a tacit condition; they may believe, if they properly use the light and power which God has given them. Such prophecies also are of a general application - they will always suit somebody, for in every age persons will be found who resist the grace and Spirit of God like these disobedient Jews. However, it appears that this prediction belonged especially to these rejecters and crucifiers of Christ; and if the prophecy was infallible in its execution, with respect to them, it was not because of the prediction that they continued in unbelief, but because of their own voluntary obstinacy; and God foreseeing this, foretold it by the prophet. Should I say that, they could not believe, means, they would not believe, I should perhaps offend a generation of his children; and yet I am pretty certain the words should be so understood. However, that I may put myself under cover from all suspicion of perverting the meaning of a text which seems to some to be spoken in favor of that awful doctrine of unconditional reprobation, the very father of it shall interpret the text for me. Thus then saith St. Augustin: Quare autem non Poterant, si a me quaeratur, cito respondeo; Quia Nolebant: Malam quippe eorum Voluntatem praevidit Deus, et per prophetam praenunciavit. "If I be asked why they Could not believe? I immediately answer, Because They Would Not. And God, having foreseen their Bad Will, foretold it by the prophet." Aug. Tract. 53, in Joan.
Verse 40

And I should heal them - This verse is taken from Isa 6:9, and, perhaps, refers more to the judgments that should fall upon them as a nation, which God was determined should not be averted, than it does to their eternal state. To suppose that the text meant that God was unwilling that they should turn unto him, lest he should be obliged to save them, is an insupportable blasphemy.
Verse 41

When he saw his glory - Isa 6:1, etc. I saw Jehovah, said the prophet, sitting upon a throne, high and lifted up, and his train filled the temple. Above it stood the seraphim; and one cried unto another, and said, Holy, holy, holy, is Jehovah, God of hosts; the whole earth shall be full of his glory! It appears evident, from this passage, that the glory which the prophet saw was the glory of Jehovah: John, therefore, saying here that it was the glory of Jesus, shows that he considered Jesus to be Jehovah. See Bishop Pearce. Two MSS. and a few versions have Θεου, and του Θεου αὑτου, the glory of God, or of his God.
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