Gregory the Dialogist

He bindeth up the waters in his thick clouds, that they should not burst forth alike beneath. For what does he call 'the waters' in this place but knowledge; what 'clouds' but the Preachers? For that in Holy Writ 'water' may sometimes be a term used for knowledge, we have been taught by Solomon bearing witness to it, who says, The words of a man's mouth are as deep waters, and the well-spring of wisdom as a flowing brook. …

Morals on the Book of Job, Book XVII ↗

Thomas Aquinas

Then he enumerates the effects of divine power in the middle space between heaven and earth. First, in the air, where one finds the wondrous fact that water is lifted up as vapor, is suspended in the air, and does not fall all at once, but drop by drop. One sees this in the rain, and so he says, "He binds up the waters in his thick clouds," in clouds caused by his power, "so that the clouds do not break," from the rainwater's, "falling out at the same time," but drop by drop to keep the earth at a moderate temperature. …

Commentary on Job ↗