Jerome

"Furthermore, I have observed beneath the sun: in the place of justice there is wickedness, and in the place of righteousness there is wickedness. I mused: God will judge the righteous and the wicked, for there is a time for everything and for every deed, there." The meaning of this is clear but is cloaked by the cloud of interpretation. He says: I sought truth and righteousness under the sun and I saw that even among the benches of judges truth is not valued, but gifts. …

Commentary on Ecclesiastes ↗

Bede

"The shape of this world passes away," not its substance; just as with our bodies too, the shape will be changed. The substance does not perish when "what is sowed as a physical body rises as a spiritual body." But we read nothing of this sort about the fire and the water. …

Commentary on the Catholic Epistles, 2 Peter 3:13 ↗

Bonaventure

Part II. The vanity of fault is proved, then the remedy against it is set forth. I saw under the sun, etc. He treated above of the vanity of nature; here of the vanity of fault: and because this is dangerous, therefore it needs a remedy. First, therefore, he sets forth the vanity; second, the remedy against it, below in chapter four: Guard your foot. Now vanity is under a threefold distinction: first he treats of the vanity of malice; second, of avarice, at: I considered and found; third, of imprudence, at: Better is a child. …

Commentary on Ecclesiastes, Chapter 3 ↗