4 Since then its riches are so great, let us arouse ourselves, and receive that which is spoken with a watchful mind; for I am preparing to plunge our discussion to an extreme depth. The admonition itself has no doubt seemed beside the purpose, and superfluous to many: and they are apt to talk much in this way, “Was Timothy of himself not able to judge what it was needful to make use of, and did he wait to learn this of his teacher. And then did the teacher not only give directions, but also set them down in writing, graving it there as on a column of brass in his Epistle to him? And was he not ashamed to give directions about things of this nature, when writing in a public manner, to his disciple?” For this end then, that you may learn that the admonition, so far from being beside the purpose, was a necessary and highly profitable one; and that the thing proceeded not from Paul, but from the grace of the Spirit, viz, that this should have been (I say) not a spoken precept, but one deposited in letters, and to be handed down to all future generations through the Epistle, I shall proceed at once to the proof.
Source: Homilies on the Statues (New Advent)