2 Corinthians 12:12
“Although I be nothing, the signs of an Apostle were wrought among you.”
'Look not thou at this,' he says, 'whether I be mean and little, but whether you have not enjoyed those things which from an Apostle it was meet you should enjoy.' Yet he did not say 'mean,' but what was lower, “nothing.” For where is the good of being great, and of use to nobody? Even as there is no advantage in a skilful physician if he heals none of those that be sick. 'Do not then,' he says, 'scrutinize this that I am nothing, but consider that, that wherein ye ought to have been benefitted, I have failed in nothing, but have given proof of mine Apostleship. There ought then to have been no need for me to say anything.' Now he thus spoke, not as wanting to be commended, (for how should he, he who counted heaven itself to be a small thing in comparison with his longing after Christ?) but as desiring their salvation. Then lest they should say, 'And what is it to us, even though you were not a whit behind the very chiefest Apostles?' he therefore added,
“The signs of an Apostle were wrought among you in all patience, and by signs and wonders.” Amazing! What a sea of good works has he traversed in a few words! And observe what it is he puts first, “patience.” For this is the note of an Apostle, bearing all things nobly. This then he expressed shortly by a single word; but upon the miracles, which were not of his own achieving, he employs more. For consider how many prisons, how many stripes, how many dangers, how many conspiracies, how many sleet-showers of temptations, how many civil, how many foreign wars, how many pains, how many attacks he has implied here in that word, “patience!” And by “signs” again, how many dead raised, how many blind healed, how many lepers cleansed, how many devils cast out! Hearing these things, let us learn if we happen upon a necessity for such recitals to cut our good deeds short, as he too did.
2. Then lest any should say, Well! If you be both great, and have wrought many things, still you have not wrought such great things, as the Apostles have in the other Churches, he added,
Source: Homilies on Second Corinthians (New Advent)