2 Corinthians 3:5

If Celsus, indeed, had understood our teaching regarding the Spirit of God, and had known that “as many as are led by the Spirit of God, these are the sons of God,” he would not have returned to himself the answer which he represents as coming from us, that “God put His own Spirit into a body, and sent it down to us;” for God is perpetually bestowing of His own Spirit to those who are capable of receiving it, although it is not by way of division and separation that He dwells in (the hearts of) the deserving. Nor is the Spirit, in our opinion, a “body,” any more than fire is a “body,” which God is said to be in the passage, “Our God is a consuming fire.” For all these are figurative expressions, employed to denote the nature of “intelligent beings” by means of familiar and corporeal terms. …

1. Faustus said: Why do we not receive the Old Testament? Because when a vessel is full, what is poured on it is not received, but allowed to run over; and a full stomach rejects what it cannot hold. So the Jews, satisfied with the Old Testament, reject the New; and we who have received the New Testament from Christ, reject the Old. You receive both because you are only half filled with each, and the one is not completed, but corrupted by the other. For vessels half filled should not be filled up with anything of a different nature from what they already contain. If it contains wine, it should be filled up with wine, honey with honey, vinegar with vinegar. For to pour gall on honey, or water on wine, or alkalies on vinegar, is not addition, but adulteration. This is why we do not receive the Old Testament. …

In the passage where he speaks to the Corinthians about the letter that kills, and the spirit that gives life, he expresses himself more clearly, but he does not mean even there any other “letter” to be understood than the Decalogue itself, which was written on the two tables. For these are His words: “Forasmuch as ye are manifestly declared to be the epistle of Christ ministered by us, written not with ink, but with the Spirit of the living God; not in tables of stone, but in fleshy tables of the heart. And such trust have we through Christ to God-ward: not that we are sufficient of ourselves to think anything as of ourselves; but our sufficiency is of God; who hath made us fit, as ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life. …

Now, observe how consonant this diversity is with those words of the apostle which I quoted not long ago in another connection, and which I postponed for a more careful consideration afterwards: “Forasmuch,” says he, “as ye are manifestly declared to be the epistle of Christ ministered by us, written not with ink, but with the Spirit of the living God; not in tables of stone, but in fleshy tables of the heart.” See how he shows that the one is written without man, that it may alarm him from without; the other within man himself, that it may justify him from within. He speaks of the “fleshy tables of the heart,” not of the carnal mind, but of a living agent possessing sensation, in comparison with a stone, which is senseless. …

Let Pelagius, therefore, cease at last to deceive both himself and others by his disputations against the grace of God. It is not on account of only one of these three, that is to say, of the “capacity” of a good will and work, that the grace of God towards us ought to be proclaimed; but also on account of the good “will” and “work” themselves. This “capacity,” indeed, according to his definition, avails for both directions; and yet our sins must not also be attributed to God in consequence, as our good actions, according to his view, are attributed to Him owing to the same capacity. It is not only, therefore, on this account that the help of God’s grace is maintained, because it assists our natural capacity. …

For they have thought that it was to be objected to us that we say “that God inspires into unwilling and resisting man the desire,” not of any very great good, but “even of imperfect good.” Possibly, then, they themselves are keeping open, in some sense at least, a place for grace, as thinking that man may have the desire of good without grace, but only of imperfect good; while of perfect, he could not easily have the desire with grace, but except with it they could not have it at all. Truly, even in this way, too, they are saying that God’s grace is given according to our merits, which Pelagius, in the ecclesiastical meeting in the East, condemned, in the fear of being condemned. …

But assuredly, as to what is written, “The preparation of the heart is man’s part, and the answer of the tongue is from the Lord,” they are misled by an imperfect understanding, so as to think that to prepare the heart, that is, to begin good, pertains to man without the aid of God’s grace. Be it far from the children of promise thus to understand it! As if, when they heard the Lord saying, “Without me ye can do nothing,” they would convict Him by saying, “Behold without Thee we can prepare the heart;” or when they heard from Paul the apostle, “Not that we are sufficient to think anything as of ourselves, but our sufficiency is of God,” as if they would also convict him, saying, “Behold, we are sufficient of ourselves to prepare our heart, and thus also to think some good thing; for who can without good thought prepare his heart for good?” Be it far from any thus to understand the passag …

Let us, therefore, consider those very merits of the Apostle Paul which he said the Righteous Judge would recompense with the crown of righteousness; and let us see whether these merits of his were really his own, I mean, whether they were obtained by him of himself, or were the gifts of God. “I have fought,” says he, “the good fight; I have finished my course; I have kept the faith.” Now, in the first place, these good works were nothing, unless they had been preceded by good thoughts. Observe, therefore, what he says concerning these very thoughts. His words, when writing to the Corinthians, are: “Not that we are sufficient of ourselves to think anything as of ourselves; but our sufficiency is of God.” Then let us look at each several merit. “I have fought the good fight.” Well, now, I want to know by what power he fought. …

And, therefore, commending that grace which is not given according to any merits, but is the cause of all good merits, he says, “Not that we are sufficient to think anything as of ourselves, but our sufficiency is of God.” Let them give attention to this, and well weigh these words, who think that the beginning of faith is of ourselves, and the supplement of faith is of God. For who cannot see that thinking is prior to believing? For no one believes anything unless he has first thought that it is to be believed. For however suddenly, however rapidly, some thoughts fly before the will to believe, and this presently follows in such wise as to attend them, as it were, in closest conjunction, it is yet necessary that everything which is believed should be believed after thought has preceded; although even belief itself is nothing else than to think with assent. …

Let the inquirer still go on, and say, “Why is it that to some who have in good faith worshipped Him He has not given to persevere to the end?” Why except because he does not speak falsely who says, “They went out from us, but they were not of us; for if they had been of us, doubtless they would have continued with us.” Are there, then, two natures of men? By no means. If there were two natures there would not be any grace, for there would be given a gratuitous deliverance to none if it were paid as a debt to nature. But it seems to men that all who appear good believers ought to receive perseverance to the end. But God has judged it to be better to mingle some who would not persevere with a certain number of His saints, so that those for whom security from temptation in this life is not desirable may not be secure. …

And when Ambrose said this, he was speaking in that treatise which he wrote concerning Flight from the World, wherein he taught that this world was to be fled not by the body, but by the heart, which he argued could not be done except by God’s help. For he says: “We hear frequent discourse concerning fleeing from this world, and I would that the mind was as careful and solicitous as the discourse is easy; but what is worse, the enticement of earthly lusts constantly creeps in, and the pouring out of vanities takes possession of the mind; so that what you desire to avoid, this you think of and consider in your mind. And this is difficult for a man to beware of, but impossible to get rid of. …

From all which it is shown with sufficient clearness that the grace of God, which both begins a man’s faith and which enables it to persevere unto the end, is not given according to our merits, but is given according to His own most secret and at the same time most righteous, wise, and beneficent will; since those whom He predestinated, them He also called, with that calling of which it is said, “The gifts and calling of God are without repentance.” To which calling there is no man that can be said by men with any certainty of affirmation to belong, until he has departed from this world; but in this life of man, which is a state of trial upon the earth, he who seems to stand must take heed lest he fall. …