Romans 12:2

"And be not fashioned after this world; but be ye transformed by the renewing of your mind." For the fashion of this world is grovelling and worthless, and but for a time, neither bath ought of loftiness, or lastingness, or straightforwardness, but is wholly perverted. If then thou wouldest walk upright, figure not thyself after the fashion of this life present. For in it there is nought abiding or stable. And this is why he calls it a fashion; and so in another passage, "the fashion of this world passeth away." For it hath no durability or fixedness, but all in it is but for a season; and so he calls it this age, hereby to indicate its liableness to misfortune, and by the word fashion its unsubstantialness. For speak of riches, or of glory, or beauty of person, or of luxury, or of whatever other of its seemingly great things you will, it is a fashion only, not reality, a show and a mask, not any abiding substance. But "be not thou fashioned after this, but be transformed," he says, "by the renewing of your mind." He says not change the fashion, but "be transformed", to show that the world's ways are a fashion, but virtue's not a fashion, but a kind of real form, with a natural beauty of its own, lacking not the trickeries and fashions of outward things, which no sooner appear than they go to nought. For all these things, even before they come to light, are dissolving. If then thou throwest the fashion aside, thou wilt speedily come to the form. For nothing is more strengthless than vice, nothing so easily wears old. Then since it is likely that being men they would sin every day, he consoles his hearer by saying, "renew thyself" from day to day. This is what we do with houses, we keep constantly repairing them as they wear old, and so do thou unto thyself. Hast thou sinned to-day? hast thou made thy soul old? despair not, despond not, but renew it by repentance, and tears, and confession, and by doing of good things. And never fail of doing this. And how are we to do this? "That ye may prove what is that good, and acceptable, and perfect will of God." Either he means by this, be renewed, that ye may learn what is more expedient for you, and what the will of God. Or rather, that ye can get so renewed if ye learn the things expedient, and what God may will. For if thou see this, and know how to distinguish the nature of things, thou art in possession of the whole way of virtue. And who, it may be said, is ignorant of what is expedient, and what is the will of God? They that are flurried with the things of this world, they that deem riches an enviable thing, they that make light of poverty, they that follow after power, they that are gaping after outward glory, they that think themselves great men when they raise fine houses, and buy costly sepulchres, and keep herds of slaves, and carry a great swarm of eunuchs about with them; these know not what is expedient for them, or what the will of God is. For both of these are but one thing. For God willeth what things are expedient for us, and what God willeth, that is also expedient for us. What then are the things which God willeth? to live in poverty, in lowliness of mind, in contempt of glory; in continency, not in self-indulgence; in tribulation, not in ease; in sorrow, not in dissipation and laughter; in all the other points whereon He hath given us laws. But the generality do even think these things of ill omen; so far are they from thinking them expedient, and the will of God. This then is why they never can come near even to the labors for virtue's sake. For they that do not know so much even as what virtue may be, but reverence vice in its place, and take unto their bed the harlot instead of the modest wife, how are they to be able to stand aloof from the present world? Wherefore we ought above all to have a correct estimate of things, and even if we do not follow after virtue, to praise virtue, and even if we do not avoid vice, to stigmatize vice, that so far we may have ou