Gregory the Dialogist

Wherefore then do ye now say, Let us persecute him, and find out the root of the word against him? Fly therefore from the face of the sword, for the sword is an avenger of wickedness; and know that there is a judgment. For in the first sentence he reproved the deeds of the wicked, while in the following he made known the punishments proceeding from the Divine judgment, Thus he saith, Wherefore then do ye now say; Let us persecute him and find out the root of the word against him? …

Morals on the Book of Job, Book XIV ↗

Thomas Aquinas

Thus after he has shown the depth of the hope which he had in God, he rejects their false accusations which they sought to make against him as if he had rejected the hope and fear of God by not putting his hope in temporal things. So he then says, "Why, then, do you now say: Let us persecute him?" namely, as though I despair of God or do not fear God, "and let us find the root of the word against him," by condemning my speech as though I have denied the providence of God? …

Commentary on Job ↗