Theophylact of Ohrid

They may be worthy of indulgence? By no means; on the contrary, they are all the more undeserving of it. Since they were mired in sins and lusts, their reason also became dulled, so that their inability to know the truth is not a natural deficiency, but a consequence of the wrong direction of their will.

Commentary on 2 Timothy ↗

Irenaeus

Those, therefore, who desert the preaching of the Church, call in question the knowledge of the holy presbyters, not taking into consideration of how much greater consequence is a religious man, even in a private station, than a blasphemous and impudent sophist. …

Against Heresies Book V ↗

Augustine of Hippo

Let us give our mind's best attention, and, with the Lord's help, seek after God. The language of the divine hymn is: "Seek God and your soul shall live." Let us search for that which needs to be discovered, and into that which has been discovered. He whom we need to discover is concealed, in order to be sought after; and when found, is infinite, in order still to be the object of our search. …

Tractates On John 63.1 ↗

Jerome

It is a good thing … to defer to one's betters, to obey those set over one, to learn not only from the Scriptures but from the example of others how one ought to order one's life, and not to follow that worst of teachers, one's own self-confidence. Of women who are thus presumptuous the apostle says that they "are carried about with every wind of doctrine," "ever learning and never able to come to the knowledge of the truth."

Letters 130.17 ↗

Thomas Aquinas

In regard to the fourth he says, ever learning, and never attaining to the knowledge of the truth. For curiosity is ever on the alert for news, and refuses to concentrate; hence he says, ever learning: a foolish woman and clamorous and full of allurements and knowing nothing at all (Prov 9:13). Yet his description, ever learning, can be applied to those who creep into houses.

Commentary on 2 Timothy ↗