Gregory the Dialogist

I will therefore answer thy words, and thy friends with thee. In his former saying, he mentioned culpable words, as if those of blessed Job, and derived from them matter for his remarks. But, in the words which follow, he examines, with great acuteness, that, which he craftily invented as matter to speak upon. And the sentiments which follow are powerful, but are not applicable to the character of blessed Job; and the shafts of this reproof strike him the less, the more unjustly they are launched against him.

Morals on the Book of Job, Book XXVI ↗

Thomas Aquinas

He concludes from this that he is compelled to answer because of their absurdity, and so he says, "That is why I will answer your discourses and at the same time those of your friends," who could not convince you when you said such things.

Commentary on Job ↗