Commentary Inf XXXIII 148-150

For the third time Alberigo asks Dante to clear the ice from his eyes, and now Dante, having what he wanted from him, simply does not do so. There are those who argue that the protagonist here behaves more like a sinner than like a Christian, but by now we should be used to his approved form of righteous indignation. And there is no reproof for such behavior from Virgil here.