Gregory the Dialogist

The princes ceased to speak, and laid the finger on the mouth. The rulers held their peace, and their tongue cleaved to their throat. Who else in this place can be understood as leaders or princes, but the framers of heretical evil? Concerning whom it is said by the Psalmist, Strife was poured out upon their princes, and they led them aside in the pathless place, and not in the way. …

Morals on the Book of Job, Book XIX ↗

Thomas Aquinas

Third the governors of the city showed respect for his judgment, first because they broke off a conversation already begun when he wished to speak, and so he says, "The city elders refrained from talking." Second because they did not dare to interrupt him while he was speaking, and so he says, "and they put their fingers to their mouths."

Commentary on Job ↗