Gregory the Dialogist

Therefore doth Job open his mouth in vain, he multiplieth words without knowledge. By introducing these words, he doubtless asserts, that blessed Job both knew nothing, and had said much; and, though he introduces his own opinions loquaciously, he accuses him of the fault of loquacity. But this seems also to be a peculiar fault of the arrogant, that they believe the much, which they have said, to be little, and the little, which is said to them, to be much. …

Morals on the Book of Job, Book XXVI ↗

Thomas Aquinas

But since he took Job's words in an evil sense, he therefore rejected them, concluding from what he had said, "So Job in vain (without reason) opens his mouth," rejecting his lengthy discourse, "and multiplies words without knowledge." In this he accuses him of ignorance and useless verbosity.

Commentary on Job ↗