Hear, then, the parables of the tower; for I will reveal all to you, and give me no more trouble in regard to revelation: for these revelations have an end, for they have been completed. But you will not cease praying for revelations, for you are shameless.
Paul is now going to describe how he has been raised up in order that the Corinthians might understand how great and how wonderful the things said to him were and that they might realize that he is not inferior in any way to the other apostles.
It is not expedient for me doubtless to glory, [for] I will come to visions and revelations of the Lord.
What is this? Does he who has spoken such great things say, [It is not expedient] "doubtless to glory?" as if he had said nothing? No; not as if he had said nothing: but because he is going to pass to another species of boasting, which is not intended indeed by so great a reward, but which to the many (though not to careful examiners) seems to set him off in brighter colors , he says, "It is not expedient for me doubtless to glory." For truly the great grounds of boasting were those which he had recounted, those of his trials; he has however other things also to tell of, such as concern the revelations, the unspeakable mysteries. And wherefore, says he, "It is not expedient for me?" he means, 'lest it lift me up to pride.' What do you say? For if you speak not of them, yet do you not know of them? But our knowing of them ourselves does not lift us up so much as our publishing them to others. For it is not the nature of good deeds that uses to lift a man up, but their being witnessed to, and known of, by the many. For this cause therefore he says, "It is not expedient for me;" and, 'that I may not implant too great an idea of me in those who hear.' For those men indeed, the false apostles, said even what was not true about themselves; but this man hides even what is true, and that too although so great necessity lies upon him, and says, "It is not expedient for me;" teaching one and all even to superfluity to avoid anything of the sort. For this thing is attended with no advantage, but even with harm, except there be some necessary and useful reason which induces us thereto. Having then spoken of his perils, trials, snares, dejections, shipwrecks, he passes to another species of boasting, saying...
It is not so much the deeds themselves which are the cause of pride, as our telling them to others. Good deeds will not puff anybody up unless they are witnessed to and remarked upon by others.
[AD 160] Shepherd of Hermas on 2 Corinthians 12:1