In keeping with Dante’s theme of retribution, where the punishment fits the sin, the Thieves in the seventh chasm consistently steal one another’s forms, and they are condemned to spend eternity with their hands bound. Just as they stole the substance of others in life, they have their only substance (their body forms) stolen throughout their eternal damnation in death.
Dante becomes afraid when Virgil shows signs of confusion and weakness. Dante relies on Virgil, who symbolizes human reason and wisdom, to deliver him from Hell, and when his guide shows signs of failure, he becomes irritated and fearful. Virgil was deceived by Malacoda and as a result, is off track. Virgil’s confusion illustrates the fallibility of human wisdom. Dante uses this fallibility to illustrate his notion that only things that are divine can reach perfection, and even though Virgil is a great guide, he cannot ever reach perfection. Dante shows his all-too-human side at the opening of Canto XXIV, where he can barely climb from the chasm of the Hypocrites. He does not belong in Hell, and he is tiring physically from this journey; fortunately, it is almost at a close.
Dante again uses prophecy as a devise to further the political narrative of his poem. The main action in the seventh chasm begins with Vanni Fucci, who was a Black Guelph in Piceno and was accused of stealing from the sacristy. His presence in this pit is not as significant as his malicious prophecy against Dante, who was a White Guelph. His prophecy is that there will be a battle at Pistoia and that the battle will result in wounding the Whites. Indeed, this did happen in 1302, far before Dante wrote this part of Inferno. However, no matter the dark prophecy—Fucci pays for his maliciousness and blasphemy in due course in Canto XXV.
The main action of Canto XXV, besides the serpents swarming Fucci and obscuring him, is the action surrounding the Five Thieves of Florence. Little is known specifically about them beyond the fact that they were thieves, but Dante apparently knew of their reputations. These thieves are damned to spend eternity stealing one another’s forms.
The transformation of the spirits and the serpents are described at length with terrifying vividness. Watching in horrified fascination, Dante seems to be recalling an evil nightmare, and words fail him at the end—an effective literary device that he will use again.
