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Our Lord's Sermon on the Mount

Augustine of Hippo (354–430)

Book I

Explanation of the first part of the sermon delivered by our Lord on the mount, as contained in the fifth chapter of Matthew.

Chapter I.

1. If any one will piously and soberly consider the sermon which our Lord Jesus Christ spoke on the mount, as we read it in the Gospel according to Matthew, I think that he will find in it, so far as regards the highest morals, a perfect standard of the Christian life: and this we do not rashly venture to promise, but gather it from the very words of the Lord Himself. For the sermon itself is brought to a close in such a way, that it is clear there are in it all the precepts which go to mould the life. For thus He speaks: "Therefore, whosoever heareth these words of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock: and the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock. And every one that heareth these words of mine, and doeth them not, I will liken unto a foolish man, which built his house upon the sand: and the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell: and great was the fall of it." Since, therefore, He has not simply said, "Whosoever heareth my words," but has made an addition, saying, "Whosoever heareth these words of mine," He has sufficiently indicated, as I think, that these sayings which He uttered on the mount so perfectly guide the life of those who may be willing to live according to them, that they may justly be compared to one building upon a rock. I have said this merely that it may be clear that the sermon before us is perfect in all the precepts by which the Christian life is moulded; for as regards this particular section a more careful treatment will be given in its own place.

2. The beginning, then, of this sermon is introduced as follows: "And when He saw the great multitudes, He went up into a mountain: and when He was set, His disciples came unto Him: and He opened His mouth, and taught them, saying." If it is asked what the "mountain" means, it may well be understood as meaning the greater precepts of righteousness; for there were lesser ones which were given to the Jews. Yet it is one God who, through His holy prophets and servants, according to a thoroughly arranged distribution of times, gave the lesser precepts to a people who as yet required to be bound by fear; and who, through His Son, gave the greater ones to a people whom it had now become suitable to set free by love. Moreover, when the lesser are given to the lesser, and the greater to the greater, they are given by Him who alone knows how to present to the human race the medicine suited to the occasion. Nor is it surprising that the greater precepts are given for the kingdom of heaven, and the lesser for an earthly kingdom, by that one and the same God, who made heaven and earth. With respect, therefore, to that righteousness which is the greater, it is said through the prophet, "Thy righteousness is like the mountains of God:" and this may well mean that the one Master alone fit to teach matters of so great importance teaches on a mountain. Then He teaches sitting, as behooves the dignity of the instructor's office; and His disciples come to Him, in order that they might be nearer in body for hearing His words, as they also approached in spirit to fulfil His precepts. "And He opened His mouth, and taught them, saying." The circumlocution before us, which runs, "And He opened His mouth," perhaps gracefully intimates by the mere pause that the sermon will be somewhat longer than usual, unless, perchance, it should not be without meaning, that now He is said to have opened His own mouth, whereas under the old law He was accustomed to open the mouths of the prophets.

3. What, then, does He say? "Blessed are the poor in spirit, for theirs is the kingdom of heaven." We read in Scripture concerning the striving after temporal things, "All is vanity and presumption of spirit;" but presumption of spirit means audacity and pride: usually also the proud are said to have great spirits; and rightly, inasmuch as the wind also is called spirit. And hence it is written, "Fire, hail, snow, ice, spirit of tempest." But, indeed, who does not know that the proud are spoken of as puffed up, as if swelled out with wind? And hence also that expression of the apostle, "Knowledge puffeth up, but charity edifieth." And "the poor in spirit" are rightly understood here, as meaning the humble and God-fearing, i.e. those who have not the spirit which puffeth up. Nor ought blessedness to begin at any other point whatever, if indeed it is to attain unto the highest wisdom; "but the fear of the Lord is the beginning of wisdom;" for, on the other hand also, "pride" is entitled "the beginning of all sin." Let the proud, therefore, seek after and love the kingdoms of the earth; but "blessed are the poor in spirit, for theirs is the kingdom of heaven."

Chapter II.

4. "Blessed are the meek, for they shall by inheritance possess the earth:" that earth, I suppose, of which it is said in the Psalm, "Thou art my refuge, my portion in the land of the living." For it signifies a certain firmness and stability of the perpetual inheritance, where the soul, by means of a good disposition, rests, as it were, in its own place, just as the body rests on the earth, and is nourished from it with its own food, as the body from the earth. This is the very rest and life of the saints. Then, the meek are those who yield to acts of wickedness, and do not resist evil, but overcome evil with good. Let those, then, who are not meek quarrel and fight for earthly and temporal things; but "blessed are the meek, for they shall by inheritance possess the earth," from which they cannot be driven out.

5. "Blessed are they that mourn: for they shall be comforted." Mourning is sorrow arising from the loss of things held dear; but those who are converted to God lose those things which they were accustomed to embrace as dear in this world: for they do not rejoice in those things in which they formerly rejoiced; and until the love of eternal things be in them, they are wounded by some measure of grief. Therefore they will be comforted by the Holy Spirit, who on this account chiefly is called the Paraclete, i.e. the Comforter, in order that, while losing the temporal joy, they may enjoy to the full that which is eternal.

Book II

On the latter part of our Lord's Sermon on the Mount, contained in the sixth and seventh chapters of Matthew.

Chapter I.

1. The subject of mercy, with the treatment of which the first book came to a close, is followed by that of the cleansing of the heart, with which the present one begins. The cleansing of the heart, then, is as it were the cleansing of the eye by which God is seen; and in keeping that single, there ought to be as great care as the dignity of the object demands, which can be beheld by such an eye. But even when this eye is in great part cleansed, it is difficult to prevent certain defilements from creeping insensibly over it, from those things which are wont to accompany even our good actions,--as, for instance, the praise of men. If, indeed, not to live uprightly is hurtful; yet to live uprightly, and not to wish to be praised, what else is this than to be an enemy to the affairs of men, which are certainly so much the more miserable, the less an upright life on the part of men gives pleasure? If, therefore, those among whom you live shall not praise you when living uprightly, they are in error: but if they shall praise you, you are in danger; unless you have a heart so single and pure, that in those things in which you act uprightly you do not so act because of the praises of men; and that you rather congratulate those who praise what is right, as having pleasure in what is good, than yourself; because you would live uprightly even if no one were to praise you: and that you understand this very praise of you to be useful to those who praise you, only when it is not yourself whom they honour in your good life, but God, whose most holy temple every man is who lives well; so that what David says finds its fulfilment, "In the Lord shall my soul be praised; the humble shall hear thereof, and be glad." It belongs therefore to the pure eye not to look at the praises of men in acting rightly, nor to have reference to these while you are acting rightly, i.e. to do anything rightly with the very design of pleasing men. For thus you will be disposed also to counterfeit what is good, if nothing is kept in view except the praise of man; who, inasmuch as he cannot see the heart, may also praise things that are false. And they who do this, i.e. who counterfeit goodness, are of a double heart. No one therefore has a single, i.e. a pure heart, except the man who rises above the praises of men; and when he lives well, looks at Him only, and strives to please Him who is the only Searcher of the conscience. And whatever proceeds from the purity of that conscience is so much the more praiseworthy, the less it desires the praises of men.

2. "Take heed, therefore," says He, "that ye do not your righteousness before men, to be seen of them:" i.e., take heed that ye do not live righteously with this intent, and that ye do not place your happiness in this, that men may see you. "Otherwise ye have no reward of your Father who is in heaven:" not if ye should be seen by men; but if ye should live righteously with the intent of being seen by men. For, [were it the former], what would become of the statement made in the beginning of this sermon, "Ye are the light of the world. A city that is set on an hill cannot be hid. Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house. Let your light so shine before men, that they may see your good works"? But He did not set up this as the end; for He has added, "and glorify your Father who is in heaven." But here, because he is finding fault with this, if the end of our right actions is there, i.e. if we act rightly with this design, only of being seen of men; after He has said, "Take heed that ye do not your righteousness before men," He has added nothing. And hereby it is evident that He has said this, not to prevent us from acting rightly before men, but lest perchance we should act rightly before men for the purpose of being seen by them, i.e. should fix our eye on this, and make it the end of what we have set before us.

3. For the apostle also says, "If I yet pleased men, I should not be the servant of Christ;" while he says in another place, "Please all men in all things, even as I also please all men in all things." And they who do not understand this think it a contradiction; while the explanation is, that he has said he does not please men, because he was accustomed to act rightly, not with the express design of pleasing men, but of pleasing God, to the love of whom he wished to turn men's hearts by that very thing in which he was pleasing men. Therefore he was both right in saying that he did not please men, because in that very thing he aimed at pleasing God: and right in authoritatively teaching that we ought to please men, not in order that this should be sought for as the reward of our good deeds; but because the man who would not offer himself for imitation to those whom he wished to be saved, could not please God; but no man possibly can imitate one who has not pleased him. As, therefore, that man would not speak absurdly who should say, In this work of seeking a ship, it is not a ship, but my native country, that I seek: so the apostle also might fitly say, In this work of pleasing men, it is not men, but God, that I please; because I do not aim at pleasing men, but have it as my object, that those whom I wish to be saved may imitate me. Just as he says of an offering that is made for the saints, "Not because I desire a gift, but I desire fruit;" i.e., In seeking your gift, I seek not it, but your fruit. For by this proof it could appear how far they had advanced Godward, when they offered that willingly which was sought from them not for the sake of his own joy over their gifts, but for the sake of the fellowship of love.

4. Although when He also goes on to say, "Otherwise ye have no reward of your Father who is in heaven," He points out nothing else but that we ought to be on our guard against seeking man's praise as the reward of our deeds, i.e. against thinking we thereby attain to blessedness.

Chapter II.

5. "Therefore, when thou doest thine alms," says He, "do not sound a trumpet before thee, as the hypocrites do in the synagogues and in the streets, that they may have glory of men." Do not, says He, desire to become known in the same way as the hypocrites. Now it is manifest that hypocrites have not that in their heart also which they hold forth before the eyes of men. For hypocrites are pretenders, as it were setters forth of other characters, just as in the plays of the theatre. For he who acts the part of Agamemnon in tragedy, for example, or of any other person belonging to the history or legend which is acted, is not really the person himself, but personates him, and is called a hypocrite. In like manner, in the Church, or in any phase of human life, whoever wishes to seem what he is not is a hypocrite. For he pretends, but does not show himself, to be a righteous man; because he places the whole fruit [of his acting] in the praise of men, which even pretenders may receive, while they deceive those to whom they seem good, and are praised by them. But such do not receive a reward from God the Searcher of the heart, unless it be the punishment of their deceit: from men, however, says He, "They have received their reward;" and most righteously will it be said to them, Depart from me, ye workers of deceit; ye had my name, but ye did not my works. Hence they have received their reward, who do their alms for no other reason than that they may have glory of men; not if they have glory of men, but if they do them for the express purpose of having this glory, as has been discussed above. For the praise of men ought not to be sought by him who acts rightly, but ought to follow him who acts rightly, so that they may profit who can also imitate what they praise, not that he whom they praise may think that they are profiting him anything.