Proverbs 3:16

The beneficent action of the law, the apostle showed in the passage relating to the Jews, writing thus: “Behold, thou art called a Jew and restest in the law, and makest thy boast in God, and knowest the will of God, and approvest the things that are more excellent, being instructed out of the law, and art confident that thou thyself art a guide of the blind, a light of them who are in darkness, an instructor of the foolish, a teacher of babes, who hast the form of knowledge and of truth in the law.” For it is admitted that such is the power of the law, although those whose conduct is not according to the law, make a false pretence, as if they lived in the law. …

Here, perhaps, it may be said by that presumption of man, which is ignorant of the righteousness of God, and wishes to establish one of its own, that the apostle quite properly said, “For by the law shall no man be justified,” inasmuch as the law merely shows what one ought to do, and what one ought to guard against, in order that what the law thus points out may be accomplished by the will, and so man be justified, not indeed by the power of the law, but by his free determination. But I ask your attention, O man, to what follows. “But now the righteousness of God,” says he, “without the law is manifested, being witnessed by the law and the prophets.” Does this then sound a light thing in deaf ears? He says, “The righteousness of God is manifested.” Now this righteousness they are ignorant of, who wish to establish one of their own; they will not submit themselves to it. …

But those enemies of grace never endeavour to lay more secret snares for more vehement opposition to that same grace than when they praise the law, which, without doubt, is worthy to be praised. Because, by their different modes of speaking, and by variety of words in all their arguments, they wish the law to be understood as “grace”, that, to wit, we may have from the Lord God the help of knowledge, whereby we may know those things which have to be done, not the inspiration of love, that, when known, we may do them with a holy love, which is properly grace. …

All these commandments, however, respecting love or charity (which are so great, and such that whatever action a man may think he does well is by no means well done if done without love) would be given to men in vain if they had not free choice of will. But forasmuch as these precepts are given in the law, both old and new (although in the new came the grace which was promised in the old, but the law without grace is the letter which killeth, but in grace the Spirit which giveth life), from what source is there in men the love of God and of one’s neighbour but from God Himself? For indeed, if it be not of God but of men, the Pelagians have gained the victory; but if it come from God, then we have vanquished the Pelagians. …

( Admonition 27.) Differently to be admonished are those who prosper in what they desire in temporal matters, and those who covet indeed the things that are of this world, but yet are wearied with the labour of adversity. For those who prosper in what they desire in temporal matters are to be admonished, when all things answer to their wishes, lest, through fixing their heart on what is given, they neglect to seek the giver; lest they love their pilgrimage instead of their country; lest they turn the supplies for their journey into hindrances to their arrival at its end; lest, delighted with the light of the moon by night, they shrink from beholding the clearness of the sun. …