1 Corinthians 2:14-16
And that you may learn how great is the strength of custom, it has oftentimes prevailed over the commands of God. And why do I say, commands? Even over very blessings. For so the Jews when they had manna, required garlic; enjoying liberty they were mindful of their slavery; and they were continually longing for Egypt, because they were accustomed to it. Such a tyrannical thing is custom.
If you desire to hear of it from the heathens also; it is said that Plato, although well aware that all about the gods was a sort of imposture, condescended to all the feasts and all the rest of it, as being unable to contend with custom; and as having in fact learned this from his master. For he, too, being suspected of some such innovation, was so far from succeeding in what he desired that he even lost his life; and this, too, after making his defence. And how many men do we see now by prejudice held in idolatry, and having nothing plausible to say, when they are charged with being Greeks, but alleging the fathers, and grandfathers, and great grandfathers. For no other reason did some of the heathens call custom, second nature. But when doctrines are the subject-matter of the custom, it becomes yet more deeply rooted. For a man would change all things more easily than those pertaining to religion. The feeling of shame, too, coupled with custom, was enough to raise an obstacle; and the seeming to learn a new lesson in extreme old age, and that of those who were not so intelligent. And why wonder, should this happen in regard of the soul, seeing that even in the body custom has great force?
16. In the Apostles' case, however, there was yet another obstacle, more powerful than these; it was not merely changing custom so ancient and primitive, but there were perils also under which the change was effected. For they were not simply drawing men from one custom to another, but from a custom, wherein was no fear to an undertaking which held out threats of danger. For the believer must immediately incur confiscation, persecution, exile from his country; must suffer the worst ills, be hated of all men, be a common enemy both to his own people and to strangers. So that even if they had invited men to a customary thing out of novelty, even in this case it would have been a difficult matter. But when it was from a custom to an innovation, and with all these terrors to boot, consider how vast was the obstacle!
And again, another thing, not less than those mentioned, was added to make the change difficult. For besides the custom and the dangers, these precepts were both more burdensome, and those from which they withdrew men were easy and light. For their call was from fornication unto chastity; from love of life unto sundry kinds of death; from drunkenness unto fasting; from laughter unto tears and compunction; from covetousness unto utter indigence; from safety unto dangers: and throughout all they required the strictest circumspection. For, “Filthiness,” says he, “and foolish talking, and jesting, let it not proceed out of your mouth.” And these things they spoke unto those who knew nothing else than how to be drunken and serve their bellies; who celebrated feasts made up of nothing but of “filthiness” and laughter and all manner of revellings (κωμῳδίας ἁπάσης.) So that not only from the matter pertaining to severity of life were the doctrines burthensome, but also from their being spoken unto men who had been brought up in careless ease, and “filthiness,” and “foolish talking,” and laughter and revellings. For who among those who had lived in these things, when he heard, “If a man take not up his cross and follow Me, he is not worthy of Me;” and, “I came not to send peace but a sword, and to set a man at variance with his father, and the daughter at variance with her mother,” would not have felt himself chilled all over (ἐνάρκησε)? And who, when he heard, “If a man bid not farewell to home and country and possessions, he is not worthy of Me,” would not have hesitated, would not have refused? And yet there were men, who not only felt no chill, neither shrunk away when they heard these things, but ran to meet them and rushed upon the hardships, and eagerly caught at the precepts enjoined. Again, to be told, “For every idle word we shall give account;” and, “whosoever looks upon a woman to lust after her, has committed adultery with her as soon as seen;” and, “whosoever is angry without cause shall fall into hell;”— which of the men of that day would not these things have frightened off? And yet all came running in, and many even leaped over the boundaries of the course. What then was their attraction? Was it not, plainly, the power of Him who was preached? For suppose that the case were not as it is, but just contrary, that this side was the other, and the other this; would it have been easy, let me ask, to hold fast and to drag on those who resisted? We cannot say so. So that in every way that power is proved divine which wrought so excellently. Else how, tell me, did they prevail with the frivolous and the dissolute, urging them toward the severe and rough course of life?
17. Well; such was the nature of the precepts. But let us see whether the doctrine was attractive. Nay, in this respect also there was enough to frighten away the unbelievers. For what said the preachers? That we must worship the crucified, and count Him as God, who was born of a Jewish woman. Now who would have been persuaded by these words, unless divine power had led the way? That indeed He had been crucified and buried, all men knew; but that He had risen again and ascended, no one save the Apostles had seen.
But, you will say, they excited them by promises and deceived them by an empty sound of words. Nay, this very topic most particularly shows (even apart from all that has been said) that our doctrines are no deceit. For all its hardships took place here, but its consolations they were to promise after the resurrection. This very thing then, for I repeat it, shows that our Gospel is divine. For why did no one of the believers say, “I close not with this, neither do I endure it? Thou threatenest me with hardships here, and the good things you promise after the resurrection. Why, how is it plain that there will be a resurrection? Which of the departed has returned? Which of those at rest has risen again? Which of these has said what shall be after our departure hence?” But none of these things entered into their minds; rather they gave up their very lives for the Crucified. So that this bare fact was more than anything a proof of great power; first, their working conviction at once, touching matters so important, in persons that had never in their lives before heard of any such thing; secondly, that they prevailed on them to take the difficulties upon trial, and to account the blessings as matter of hope. Now if they had been deceivers they would have done the contrary: their good things they would have promised as of this world ἐντεῦθεν, so John 18:36; the fearful things they would not have mentioned, whether they related to the present life or the future. For so deceivers and flatterers act. Nothing harsh, nor galling, nor burdensome, do they hold out, but altogether the contrary. For this is the nature of deceit.
18. But “the folly,” it will be said, “of the greater part caused them to believe what they were told.” How do you say? When they were under Greeks, they were not foolish; but when they came over to us, did their folly then begin? And yet they were not men of another sort nor out of another world, that the Apostles took and persuaded: they were men too who simply held the opinions of the Greeks, but ours they received with the accompaniment of dangers. So that if with better reason they had maintained the former, they would not have swerved from them, now that they had so long time been educated therein; and especially as not without danger was it possible to swerve. But when they came to know from the very nature of the things that all on that side was mockery and delusion, upon this, even under menaces of sundry deaths, they sprang off (ἀπεπήδησαν) from their customary ways, and came over voluntarily unto the new; inasmuch as the latter doctrine was according to nature, but the other contrary to nature.
Source: Homilies on First Corinthians (New Advent)