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1 Why boastest thou thyself in mischief, O mighty man? the goodness of God endureth continually. 2 Thy tongue deviseth mischiefs; like a sharp rasor, working deceitfully. 3 Thou lovest evil more than good; and lying rather than to speak righteousness. Selah. 4 Thou lovest all devouring words, O thou deceitful tongue. 5 God shall likewise destroy thee for ever, he shall take thee away, and pluck thee out of thy dwelling place, and root thee out of the land of the living. Selah. 6 The righteous also shall see, and fear, and shall laugh at him: 7 Lo, this is the man that made not God his strength; but trusted in the abundance of his riches, and strengthened himself in his wickedness. 8 But I am like a green olive tree in the house of God: I trust in the mercy of God for ever and ever. 9 I will praise thee for ever, because thou hast done it: and I will wait on thy name; for it is good before thy saints.
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[AD 339] Eusebius of Caesarea on Psalms 52:1
The 33rd Psalm was spoken by David when he "changed his countenance before Abimelech, and he sent him away, and he left." The current Psalm would be the one following that Psalm in historical sequence. For the Scripture says in Kingdoms, "And one of the servants of Saul was there that day." And this indicates the time at which David came into the house of Abimelech and ate the "loaves of offering," receiving them from the high priest. For at the very same point in time, Doeg the Syrian, the tender of Saul's mules, came to Saul and said, "I have seen the son of Jesse having come to Nob, to Abimelech the son of Ahitub, the priest, and all the sons of his father; and he inquired on his behalf through God, and he gave him provisions. And the king sent someone to call Abimelech the priest, and all the sons of his father, the priests of the Lord in Nob, and they all came before the king," at which point, on Saul's order, this same Doeg put to death the priests of the Lord—" men who bore the ephod, and he smote the city of Nob with the edge of the sword, including men and women, infants and babies, and calves and donkeys and sheep."

So when David learned that this had been done in this way, he uttered the words before us, which contain neither an ode, nor a hymn, nor anything else of that sort. For how, in the face of the disaster that happened to so many priests, could he have sung odes of theirs and psalms? Hence, nothing of the kind is written as epigraph, but it was only said "to the end" and "of understanding": ["To the end,"] since the final elements of his words recount the good things, when he says, "But I am like a fruitful olive tree," etc.; and ["of understanding," since discerning] the meaning of the words put forth here requires the understanding that comes from God. Now then, when he was with Abimelech and tasted the priestly nourishment, he changed his "taste"—or his "ways," according to the interpretation of the others—and raised blessings and thanksgivings to God, saying: "I will bless the Lord at all times; the praise of him is always in my mouth," etc. But now, when he had learned of the actions of Doeg the slanderer—how he had destroyed so many priests, doing a diabolical deed—he marshalled the words of the present passage as though against him
[AD 430] Augustine of Hippo on Psalms 52:1
"Why does he glory in malice that is mighty?" [Psalm 52:1]. Observe, my brethren, the glorying of malignity, the glorying of evil men. Where is glorying? "Why does he glory in malice that is mighty?" That is, he that in malice is mighty, why does he glory? There is need that a man be mighty, but in goodness, not in malice. Is it any great thing to glory in malice? To build a house does belong to few men, any ignorant man you please can pull down. To sow wheat, to dress the crop, to wait until it ripen, and in that fruit on which one has laboured to rejoice, does belong to few men: with one spark any man you please can burn all the crop. To breed an infant, when born to feed him, to educate, to bring him on to youth's estate, is a great task: to kill him in one moment of time any one you please is able. Therefore those things which are done for destruction, are most easily done. "He that glories, let him glory in the Lord:" [1 Corinthians 1:31] he that glories, let him glory in goodness. Thou gloriest, because you are mighty in evil. What are you about to do, O mighty man, what are you about to do, boasting yourself much? You are about to kill a man: this thing also a scorpion, this also one fever, this also a poisonous fungus can do. To this is your mightiness reduced, that it be made equal to a poisonous fungus? This therefore do the good citizens of Jerusalem, who not in malice but in goodness glory: firstly, that not in themselves, but in the Lord they glory. Secondly, that those things which make for edification they earnestly do, and do such things as are strong to abide: but things which make for destruction they may do, for the discipline of men advancing, not for the oppression of the innocent. To this mightiness then that earthly body being compared, why may it not hear out of these words, "Why does he glory in malice that is mighty?"

Source: Exposition on Psalm 52
[AD 339] Eusebius of Caesarea on Psalms 52:2
The material we have before us was spoken much earlier in time than the history pertaining to the 50th Psalm. For [the history of Doeg] took place, and [the words] were spoken, while Saul was still alive, and before David's kingship. Many long years later, after the death of Saul, and at the end of his own kingship, David made the confession contained in the 50th Psalm, which he placed before [the 51st] because of its connection to the 49th Psalm, as I have already shown. Those Psalms, 20 in number, from 51 to 70, with epigraphs "of David," took their subject-matter from a different point of origin: indeed, they appear to have been spoken while Saul was still alive, before David reigned. For the one before us now was spoken while Saul was still alive, "when Doeg the Idumaean came and reported to Saul…'David came to the house of Abimelech.'" But the 53rd Psalm too was spoken "when the Ziphites came and told Saul, 'Look--is not David hidden with us?'" Also, the 55th Psalm has this epigraph: "When the Philistines seized him in Gath"—and this period too precedes David's kingship, while Saul still survived alive. And the 56th Psalm gives the epigraph: "Of David, when he was running away from Saul into the cave." In the same way also, the 58th Psalm says [in the epigraph], "When Saul sent, and guarded his house, in order to kill him." The 59th Psalm, however, even though it was spoken after the death of Saul, when David was now king, still preceded the actions relating to Uriah. This is indicated by the heading, which shows the time period involved by saying, "When he set on fire Mesopotamia of Syria, and Syria Soba, and Joab returned and smote the Ravine of Salt—twelve thousand." And this chronologically precedes the confession expressed in the 50th Psalm. Furthermore, the 62nd Psalm was spoken by David "when he was in the desert of Idumaea," while Saul was still living. Consider how more or less the majority of the second part of the book of the Psalms of David (apart from the 50th) include those which were spoken by him before the period of his actions pertaining to Uriah.

The first part of the same book, however, from the first Psalm to the 40th, [seemed to] contradict that order; for that part included those dating after the confession of the 50th Psalm. The third Psalm, then, was spoken by David "when he was running away from Absalom his son." And he was fleeing from his son after the events connected to Uriah. But also in the sixth Psalm, he was mourning for the same actions, saying, "I grew tired in my groaning; I shall wash my bed every night—with my tears I shall moisten my mattress." And the seventh Psalm, spoken "for the words of Cush the son of Iamin," would belong to the same time period. Moreover, also the 17th Psalm has been proved to have been spoken at the end of David's life. But also the 37th Psalm, with the epigraph "for remembrance," having the same train of thought as the sixth, begins with the same words, saying, "Lord, do not rebuke me in your anger, and do not correct me in your wrath." And going forward, he makes the same confession as that in the 50th Psalm, besides other passages, also when he says, "For my transgressions have gone over my head…My wounds stank and decayed before my foolishness."

And if you bring together [these indications] for yourself, you will discover that the majority of the Psalms in the first part were spoken after the time period of the history relating to Uriah, whereas those following the 50th Psalm precede [David's] actions regarding Uriah chronologically. Why in the world, then, were the first ones in chronological sequence not put in first place—and instead, those which were spoken first, while Saul was still living, are in the second part of the Psalms—and those which are chronologically last are in the first part? I think they have this arrangement so that the discourse would not move from the better to the worse; for the phrase, "to the end, lest you be destroyed," appears to have been observed also in the case of the Psalms' arrangement. For this reason, the gloomier material was placed first, so that the nicer / more useful material would be kept for second, the worse things being hidden and made to disappear by the appearance of the better ones in second place. And it is likely that David wished to draw a veil over his fault afterwards by means of his prior good deeds. And someone might say that he arranged his confessions first in accordance with tremendous piety, because "the righteous one is his own accuser in the opening prosecution" But since so many things about the arrangement apparent [in the book of Psalms] have been laid bare for you, it is now time to pass on also to the words of Psalm 51 that are before us.

Well then, he writes the words in question after learning what Doeg the Syrian had brought about by means of his slanders against David. Therefore he speaks as though addressing him: "Why do you boast in wickedness, you powerful one?"—or as though addressing the devil, who was at work in him. For he was not unaware of the one who was opposing him at all times and always fighting against him, at one time through Saul, in the current instance through Doeg, and at other times in different ways through different people. So then, the one who is powerless and weak and slight in wickedness, when the better character prevails in him, since he is feebler in wickedness, will hide himself as he sins and is pricked by his conscience, and will repent, and devise for himself a remedy for his own wickedness using confession and true repentance. The one who is powerful in wickedness, however, goes crazy and boasts over it, as though he were making himself more majestic by a great good deed.

And the passage before us appears to me to be describing the character that is the opposite of the one that made the prior confession in the 50th Psalm. For in that Psalm, after slipping once into wickedness, he repented in the end and wore himself out with confession, and lamentation over his own evil deeds.
[AD 430] Augustine of Hippo on Psalms 52:2
"In iniquity the whole day upon injustice has your tongue thought" [Psalm 52:2]: that is, in the whole of time, without weariness, without intermission, without cessation. And when you do not, you think, so that when anything of evil is away from your hands, from your heart it is not away; either you do an evil thing, or while you can not do, you say an evil thing, that is, thou evil-speakest: or when not even this you can do, you will and thinkest an evil thing. "The whole day," then, that is, without intermission. We expect punishment to this man. Is he to himself a small punishment? Thou threatenest him: thou, when you threaten him, wilt send him whither? Unto evil? Send him away unto himself. In order that you may vent much rage, you are going to give him into the power of beasts: unto himself he is worse than beasts. For a beast can mangle his body: of himself he cannot leave his heart whole. Within, against himself he does rage of himself, and do you from without seek for stripes? Nay, pray God for him, that he may be set free from himself. Nevertheless in this Psalm, my brethren, there is not a prayer for evil men, or against evil men, but a prophecy of what is to result to evil men. Think not therefore that the Psalm of ill-will says anything: for it is said in the spirit of prophecy.

Source: Exposition on Psalm 52
[AD 430] Augustine of Hippo on Psalms 52:3
There follows then what? All your might and all your thought of iniquity all the day, and meditation of malignity in your tongue without intermission, has performed what, done what? "As with a sharp razor you have done deceit" [Psalm 52:3]. See what do evil men to Saints, they scrape their hair. What is it that I have said? If there be such citizens of Jerusalem, that hear the voice of their Lord, of their King, saying, "Fear not them which kill the body, but are not able to kill the soul:" that hear the voice which but now from the Gospel has been read, "What does it profit a man, if he shall gain the whole world, and of himself make wreck:" [Matthew 16:26] they despise all present good things, and above all life itself. And what is Doeg's razor to do to a man on this earth meditating on the kingdom of heaven, and about to be in the kingdom of heaven, having with him God, and about to abide with God? What is that razor to do? Hair it is to scrape, it is to make a man bald. And this belongs to Christ, who in the Place of a Skull was crucified. [Matthew 27:33] It makes also the son of Core, which is interpreted baldness. [1 Chronicles 6:22] For this hair signifies a superfluity of things temporal. Which hairs indeed are not made by God superfluously on the body of men, but for a sort of ornament: yet because without feeling they are cut off, they that cleave to the Lord with their heart, so have these earthly things as they have hair. But sometimes even something of good with "hair" is wrought, when you break bread to the hungry, the poor without roof you bring into your house; if you shall have seen one naked, you cover him: [Isaiah 58:7] lastly, the Martyrs themselves also imitating the Lord, blood for the Church shedding, hearing that voice, "As Christ laid down His life for us, so also ought we also to lay down for the brethren," [1 John 3:16] in a certain way with their hair did good to us, that is, with those things which that razor can lop off or scrape. But that therefore even with the very hair some good can be done, even that woman a sinner intimated, who, when she had wept over the feet of the Lord, with her hair wiped what with tears she wetted. [Luke 7:38] Signifying what? That when you shall have pitied any one, you ought to relieve him also if you can. For when you have pity, you shed as it were tears: when you relieve, you wipe with hair. And if this to any one, how much more to the feet of the Lord. The feet of the Lord are what? The holy Evangelists, whereof is said, "How beautiful are the feet of them that tell of peace, that tell of good things!" Therefore like a razor let Doeg whet his tongue, let him whet deceit as much as he may: he will take away superfluous temporal things; will he necessary things everlasting?

Source: Exposition on Psalm 52
[AD 390] Gregory of Nazianzus on Psalms 52:4
The old confusion of tongues was beneficial when people, who were of one language in wickedness and impiety, just as some still are, were building the tower. But by the confusion of their language, the unity of their intention was broken up and their undertaking destroyed. Much more worthy of praise is the present miraculous unity of language [at Pentecost]. Being poured from one Spirit on many people, it brings them again into harmony. And there is a diversity of gifts, which stands in need of yet another gift to discern which is the best, where all are praiseworthy. That division also might be called noble of which David says, “Confuse the wicked, O Lord, confound their speech.” Why? Because “you love every harmful word, O you deceitful tongue!” Here he very expressly indicts the tongues of the present day that sever the Godhead.

Source: ON PENTECOST, ORATION 41:16
[AD 430] Augustine of Hippo on Psalms 52:4
"You have loved malice above benignity" [Psalm 52:4]. Before you was benignity; herself you should have loved. For you were not going to expend anything, nor were you going to fetch something to love by a distant voyage. Benignity is before you, iniquity before you: compare and choose. But perchance you have an eye wherewith you see malignity, and hast no eye wherewith you see benignity. Woe to the iniquitous heart. What is worse, it does turn away itself, that it may not see what it is able to see. For what of such has been said in another place? "He would not understand that he might do good." For it is not said, he could not: but "he would not," he says, "understand that he might do good," he closed his eyes from present light. And what follows? "Of iniquity he has meditated in his bed;" that is, in the inner secrecy of his heart. Some reproach of this kind is heaped upon this Doeg the Edomite, a malignant body, a motion of earth, not abiding, not heavenly. "You have loved malignity above benignity." For will you know how an evil man does see both, and the former he does rather choose, from the other does turn himself away? Wherefore does he cry out when he suffers anything unjustly? Wherefore does he then exaggerate as much as he can the iniquity, and praise benignity, censuring him that has wrought in him malignity above benignity? Be he then a rule to himself for seeing: out of himself he shall be judged. Moreover, if he do what is written, "You shall love your neighbour as yourself;" [Matthew 22:39] and, "Whatsoever good things you will that men should do unto you, these also do ye do unto them:" [Matthew 7:12] at home he has means of knowing, because what on himself he will not have to be done, he ought not to do to another. "You have loved malice above benignity." Iniquitously, inordinately, perversely you would raise water above oil: the water will be sunk, the oil will remain above. You would under darkness place a light: the darkness will be put to flight, the light will remain. Above heaven you would place earth, by its weight the earth will fall into its place. Thou therefore will be sunk by loving malice above benignity. For never will malice overcome benignity. "You have loved malice above benignity: iniquity more than to speak of equity." Before you is equity, before you is iniquity: one tongue you have, whither you will you turn it: wherefore then rather to iniquity and not to equity? Food of bitterness do you not give to your belly, and food of iniquity do you give to your malignant tongue? As you choose whereon to live, so choose what you may speak. Thou preferrest iniquity to equity, and preferrest malice to benignity; thou indeed preferrest, but above what can ever be but benignity and equity? But you, by placing yourself in a manner upon those things which it is necessary should go beneath, will not make them to be above good things, but thou with them will be sunk unto evil things.

Source: Exposition on Psalm 52
[AD 339] Eusebius of Caesarea on Psalms 52:5
So that the righteous, when they see it, will be afraid and will mock him.
[AD 430] Augustine of Hippo on Psalms 52:5
Because of this there follows in the Psalm, "You have loved all words of sinking under" [Psalm 52:5]. Rescue therefore yourself, if you can, from sinking under. From shipwreck you are fleeing, and dost embrace lead! If you will not sink, catch at a plank, be borne on wood, let the Cross carry you through. But now because you are a Doeg the Edomite, a "motion," and "of earth," you do what? "You have loved all words of sinking-under, a tongue deceitful." This has preceded, words of sinking-under have followed a tongue deceitful. What is a tongue deceitful? A minister of guile is a tongue deceitful, of men bearing one thing in heart, another thing from mouth bringing forth. But in these is overthrowing, in these sinking under.

Source: Exposition on Psalm 52
[AD 430] Augustine of Hippo on Psalms 52:6
"Wherefore God shall destroy you at the end" [Psalm 52:6]: though now you seem to flourish like grass in the field before the heat of the sun. For, "All flesh is grass, and the brightness of man as the bloom of grass: the grass has withered, and the bloom has fallen down: but the word of the Lord abides for everlasting." [Isaiah 40:6-8] Behold that to which you may bind yourself, to what "abides for everlasting." For if to grass, and to the bloom of grass, you shall have bound yourself, since the grass shall wither, and the bloom shall fall down, "God shall destroy you at the end:" and if not now, certainly at the end He shall destroy, when that winnowing shall have come, and the heap of chaff from the solid grain shall have been separated. Is not the solid grain for the barns, and the chaff for the fire? Shall not the whole of that Doeg stand at the left hand, when the Lord is to say, "Go ye into fire everlasting, which has been prepared for the devil and his angels"? [Matthew 25:41] Therefore "God shall destroy at the end: shall pluck you out, and shall remove you from your dwelling." Now then this Doeg the Edomite is in a dwelling: "But a servant abides not in the house for ever." [John 8:35] Even he works something of good, even if not with his doings, at least with the words of God, so that in the Church, when he "seeks his own," [Philippians 2:21] he would say, at least, those things which are of Christ.

"But He shall remove you from your dwelling." "Verily, verily, I say unto you, they have received their reward." [Matthew 6:2] "And your root from the land of the living." Therefore in the land of the living we ought to have root. Be our root there. Out of sight is the root: fruits may be seen, root cannot be seen. Our root is our love, our fruits are our works: it is needful that your works proceed from love, then is your root in the land of the living. Then shall be rooted up that Doeg, nor any wise shall he be able there to abide, because neither more deeply there has he fixed a root: [Matthew 13:5] but it shall be with him in like manner as it is with those seeds on the rock, which even if a root they throw out, yet, because moisture they have not, with the risen sun immediately do wither. But, on the other hand, they that fix a root more deeply, hear from the Apostle what? "I bow my knees for you to the Father of our Lord Jesus Christ, that you may be in love rooted and grounded." And because there now is root, "That ye may be able," he says, "to comprehend what is the height, and breadth, and length, and depth: to know also the supereminent knowledge of the love of Christ, that you may be filled unto all the fullness of God." Of such fruits so great a root is worthy, being so single, so budding, for buddings so deeply grounded. But truly this man's root shall be rooted up from the land of the living.

Source: Exposition on Psalm 52
[AD 339] Eusebius of Caesarea on Psalms 52:7
And this was said as though to Doeg, who was a Syrian by descent, but lived in the midst of Israel—and, I suppose, perhaps even entered the tabernacle of God along with the multitude, pretending to be pious. But it was also said to everyone who is powerful in wickedness, who uses his tongue instead of a sword for the destruction of souls: the "farmer of souls" would pluck him out just like some bitter and destructive root, even if he seems for some brief time to have been planted in the tabernacle of God and in his Church. Such a person, after being plucked out and cast away far from the tabernacle of the holy, will lie as a pitiable spectacle for the benefit and chastening of those who see him—they will take in with their eyes the severe judgment of God against such a person and will make every effort and guard themselves against falling into a similar situation. Later, when they recall with their memory the former boasting of the one who was powerful in wickedness, his grandeur and arrogance, but also see the humiliation and destruction that pursued him after that, they will consider him a laughing-stock, considering how he has fallen so low from such a height. And they will accept the judgment of God, confessing that it is righteous. Then, they will also go through the reasons why the impious one has suffered these things and justify God's judgment. For he ought not to have been haughty-minded over riches, nor to have been exalted over the vanity of the present life, but to have made God alone his hope and help, and not to have wavered in this hope. But he abandoned the good anchor of his own soul, and by hanging his hopes on vain wealth he made himself a joke, incurring nothing more than laughter for his vain and thoughtless boastfulness.
[AD 430] Augustine of Hippo on Psalms 52:7
"And the just shall see, and shall fear; and over him they shall laugh" [Psalm 52:7]. Shall fear when? Shall laugh when? Let us therefore understand, and make a distinction between those two times of fearing and laughing, which have their several uses. For so long as we are in this world, not yet must we laugh, lest hereafter we mourn. We have read what is reserved at the end for this Doeg, we have read and because we understand and believe, we see but fear. This, therefore, has been said, "The just shall see, and shall fear." So long as we see what will result at the end to evil men, wherefore do we fear? Because the Apostle has said, "In fear and trembling work out your own salvation:" [Philippians 2:12] because it has been said in a Psalm, "Serve the Lord in fear, and exult unto Him with trembling." Wherefore "with fear"? "Wherefore let him that thinks himself to stand, see that he fall not." [1 Corinthians 10:12] Wherefore "with trembling"? Because he says in another place: "Brethren, if a man shall have been overtaken in any delinquency, you that are spiritual instruct such sort in the spirit of gentleness; heeding yourself, lest you also be tempted." [Galatians 6:1] Therefore, the just that are now, that live of faith, so see this Doeg, what to him is to result, that nevertheless they fear also for themselves: for what they are today, they know; what tomorrow they are to be, they know not. Now, therefore, "The just shall see, and they shall fear." But when shall they laugh? When iniquity shall have passed over; when it shall have flown over; as now to a great degree has flown over the time uncertain; when shall have been put to flight the darkness of this world, wherein now we walk not but by the lamp of the Scriptures, and therefore fear as though in night. For we walk by prophecy; whereof says the Apostle Peter, "We have a more sure prophetic word, to which giving heed ye do well, as to a lamp shining in a dark place, until the day shine, and the day-star arise in your hearts." [2 Peter 1:19] So long then as by a lamp we walk, it is needful that with fear we should live. But when shall have come our day, that is, the manifestation of Christ, whereof the same Apostle says, "When Christ shall have appeared, your life, then ye also shall appear with Himself in glory," [Colossians 3:4] then the just shall laugh at that Doeg....

Source: Exposition on Psalm 52
[AD 253] Origen of Alexandria on Psalms 52:8
But do you want me to show you from the Scriptures that trees or wood are given the name of individual virtues, which we mentioned above? I turn to the most wise Solomon as a witness when he said about wisdom, “The tree of life is for all who embrace it.” Therefore, if “wisdom is the tree of life,” without a doubt, there is another tree of prudence, another of knowledge and another of justice. For logically it is not said that only wisdom, of all the virtues, was worthy to be called “the tree of life” but that the other virtues did not receive names of similar sort. Therefore, “the trees of the field will give their fruit.” This is what I believe the blessed David also understood about himself when he said, “But I am as a fruitful olive tree in the house of God.” From this he clearly shows that the olive tree designates a just and holy person.

Source: HOMILIES ON LEVITICUS 16:4.3
[AD 339] Eusebius of Caesarea on Psalms 52:8
From what I have said already, we have learned what sort of end the one who is powerful in wickedness will obtain. But as for me, says David, since I have been taught this by the Holy Spirit, I would never be exalted over abundance of wealth, nor over the vanity of mortal life. For "vanity of vanities, all is vanity." But also, as I flee from the path of the one who is powerful in wickedness, I would not sharpen my tongue and my words for the destruction of others, but rather for the benefit of souls and the service of the words of salvation. And in my other actions too, I would become so flourishing and fruitful that my soul would be compared with an ever-flourishing and richly fruitful plant that has been planted in the house of God. For this reason, I say: "But I am like a fruitful olive tree in the house of God"—or, according to Symmachus' translation: "But I am like a flourishing olive tree in the house of God." For I did not turn away at all from the house of God; rather, after being planted inside it, as it were in God's own garden, and while enjoying the streams of the spring in the house of God, I became richly fruitful and ever-flourishing, in accordance with the pattern of the planted olive tree that has been received among the ever-flourishing [plants].

But observe that when David said this, he was not in Jerusalem, which the Jewish people considered to be the house of God—for it had not yet been built; and neither was he in the tabernacle built by Moses, which did still exist at that time among the Jews. For when he was fleeing from Saul, he passed his time among others—and yet he did indeed know that he had been planted in the house of God, since he understood the "house of God" to be the pious way of life. And because he was fruitful—not bearing bitter fruits but sweet fruits full of compassion,[36] he was rightly compared to a fruitful olive tree: the pattern signifying mercy towards one's neighbors and compassion toward all. Therefore, since he was overflowing with this sort of good things, he logically added, "I have put my hope in the mercy of God forever, even forever and ever."
[AD 386] Cyril of Jerusalem on Psalms 52:8
You are being armed not with perishable but with spiritual weapons. The paradise in which you are being planted is the soul’s paradise, wherein you will be named with a name you did not have before. You were a catechumen till now, but now you are to be called believer. Henceforth you are transplanted among the olives of that paradise or are being grafted on a good olive tree being taken from a wild olive. You pass from sins to righteousness, from defilements to purity. You are becoming part of the holy Vine. If, then, you abide in the Vine, you grow into a fruitful branch; but if you do not so abide, you will be burned up in the fire. Let us therefore bring forth worthy fruit. For let not that come about, that there should happen to us what happened to the barren fig tree in the Gospel. Let not Jesus come in these days and utter the curse on the fruitless; instead may all of you say, “I am like a green olive tree in the house of God; my trust is in the tender mercy of God, forever and ever”; not a material olive tree but a spiritual and glorious one. It is God who plants and waters, but it is yours to bear fruit; God’s to bestow the gift, and yours to receive it and keep it forever. But do not esteem the gift lightly because it is given freely. Rather, receive it reverently and guard it with care.

Source: Catechetical Lecture 1:4
[AD 430] Augustine of Hippo on Psalms 52:8
But what shall they then say that shall laugh? "And over him they shall laugh; and shall say, Behold a man that has not set God for his helper" [Psalm 52:8]. See ye the body earthly! "As much as you shall have, so great shall you be," is a proverb of covetous men, of grasping men, of men oppressing the innocent, of men seizing upon other men's goods, of men denying things entrusted to their care. Of what sort is this proverb? "As much as you shall have, so great shall you be;" that is, as much as you shall have had of money, as much as you shall have gotten, by so much the more mighty shall you be. "Behold a man that has not set God for his helper, but has trusted in the multitude of his riches." Let not a poor man, one perchance that is evil, say, I am not of this body. For he has heard the Prophet saying, "He has trusted in the multitude of his riches:" immediately if he is poor, he heeds his rags, he has observed near him perchance a rich man among the people of God more richly apparelled, and he says in his heart, Of this man he speaks; does he speak of me? Do not thence except yourself, do not separate yourself, unless you shall have seen and feared, in order that you may hereafter laugh. For what does it profit you, if you dost want means, and you burn with cupidity? When our Lord Jesus Christ to that rich man that was grieved, and that was departing from Him, had said, "Go, sell all that you have, and give to the poor, and you shall have treasure in heaven, and come follow Me:" [Matthew 19:21] and great hopelessness for rich men foretold, so that He said, more easily could a camel pass through the eye of a needle, than a rich man enter into the kingdom of Heaven, [Matthew 19:24] were not immediately the disciples grieved, saying with themselves, "Who shall be able to be saved?" Therefore when they were saying, "Who shall be able to be saved?" did they think of the few rich men, did there escape them so great a multitude of poor men? Could they not say to themselves, If it is hard, aye an impossible thing, that rich men should enter into the kingdom of heaven, as it is impossible that a camel should enter through the eye of a needle, let all poor men enter into the kingdom of heaven, be the rich alone shut out? For how few are the rich men? But of poor men are thousands innumerable. For not the coats are we to look upon in the kingdom of heaven; but for every one's garment shall be reckoned the effulgence of righteousness: there shall be therefore poor men equal to Angels of God, clothed with the stoles of immortality, they shall shine as the sun in the kingdom of their Father: what reason is there for us about a few rich men to be concerned, or distressed? This thought not the Apostles; but when the Lord had spoken this, "It is easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of heaven:" they saying to themselves, "Who shall be able to be saved," meant what? Not means, but desires; for they saw even poor men themselves, even if not having money, yet to have covetousness. And that you may know, that not money in a rich man, but covetousness is condemned, attend to what I say; Thou observest that rich man standing near you, and perchance in him is money, and is not covetousness; in you is not money, and is covetousness. A poor man full of sores, full of woe, licked by dogs, having no help, having no morsel, not having perchance a mere garment, was borne by the Angels unto Abraham's bosom. [Luke 16:22] Ho! Being a poor man, are you glad now; for are even sores by you to be desired? Is not your patrimony soundness? There is not in this Lazarus the merit of poverty, but that of godliness. For you see who was borne up, you see not whither he was borne up. Who was borne up by Angels? A poor man, full of woe, full of sores. Whither was he borne up? Unto Abraham's bosom. Read the Scriptures, and you shall find Abraham to have been a rich man. [Genesis 13:2] In order that you may know, that not riches are blamed; Abraham had much gold, silver, cattle, household, was a rich man, and unto his bosom Lazarus, a poor man, was borne up. Unto bosom of rich man, poor man: are not rather both unto God rich men, both in cupidity poor men?...

Source: Exposition on Psalm 52
[AD 339] Eusebius of Caesarea on Psalms 52:9
Now, he pointed out that the end of the one who is powerful in wickedness is uprooting and destruction. For it was necessary for the root that bears bitter fruit to be †------ off† by the wise farmer of the universe. But David, like a fruitful olive tree in the house of God, put his hope in the mercy of God for ever, even forever and ever, procuring for himself immortality and eternal life on the basis of his good hope, from which he will never fall away. For according to the Apostle, "hope does not put us to shame." Then, having sketched out good hopes for himself as it were on the basis of good fruits, he attributes the responsibility [for all this] to the provider of all good things, saying: "I shall praise you forever, because you did [this]." For (he says) I did not make myself like a fruitful olive tree, but rather, you did. For grace comes from you. And so I will never cease from the knowledge of your grace, and from praising you; having once put my hope in the mercy of God, "I shall patiently await his name." For once the foundation of good hope has been established, we need patience. Therefore, he says, "I shall patiently await your name, because it is beneficial before your holy ones"—or, according to Symmachus' translation: "…because your name is good in front of your holy ones." Knowing, therefore, that it is good, and productive of good—not for those who are powerful in wickedness nor for those who are to be cast out from among the living, but to the holy ones, he quite rightly said, "I shall patiently await your name," being hopeful that I will never fall out of your mercy. In this way, I have put my hope in him forever, even for ever and ever.
[AD 430] Augustine of Hippo on Psalms 52:9
Therefore that man having been condemned that "has trusted in the multitude of his riches, and has prevailed in his vanity:" for what more vain, than he that thinks coin more to avail than God? Therefore that man having been condemned that said, blessed of the people to whom these things are: thou that sayest, "Blessed the people of whom is the Lord their own God," dost think of yourself what? dost hope for yourself what? "But I;" now at length hear that body: "But I am like an olive, fruit-bearing in the house of God" [Psalm 52:9]. Not one man speaks, but that olive fruit-bearing, whence have been pruned the proud branches, and the humble wild olive graffed in. [Romans 11:17] "Like an olive, fruit-bearing in the house of God, I have trusted in the mercy of God." He did what? "In the multitude of his riches:" therefore his root shall be plucked out from the land of the living. "But I," because "like an olive, fruit-bearing in the house of God," the root whereof is nourished, is not rooted out, "have trusted in the mercy of God." But perchance now? For even herein men err sometimes. God indeed they worship, and are not now like to that Doeg: but though on God they rely, it is for temporal things nevertheless; so that they say to themselves, I worship my God, who will make me rich upon earth, who to me will give sons, who to me will give a wife. Such things indeed gives none but God, but God would not have Himself for the sake of such things to be loved. For to this end oftentimes those things He gives even to evil men, in order that some other thing good men of Him may learn to seek. In what manner then do you say, "I have trusted in the mercy of God"? Perchance for obtaining temporal things? Nay but, "For everlasting and world without end." The expression, "For everlasting," he willed to repeat by adding, "world without end," in order that by there repeating he might affirm how rooted he was in the love of the kingdom of heaven, and in the hope of everlasting felicity.

Source: Exposition on Psalm 52
[AD 430] Augustine of Hippo on Psalms 52:10
"I will confess to You for ever, because You have done" [Psalm 52:10]. "Have done what?" Doeg You have condemned, David You have crowned. "I will confess to You for ever, because You have done." Great confession, "Because you have done"! "Have done" what? Except these very things which above have been spoken of, that like an olive fruit-bearing in the house of God, I should trust in the mercy of God for everlasting and world without end? You have done: an ungodly man cannot justify himself. But who is He that justifies? "Believing," he says, "on Him" that justifies "the ungodly." [Romans 4:5] "For what have you which you have not received? But if you have received, why do you glory as if you have not received, as if of yourself you have?" [1 Corinthians 4:7] Be it far from me that I should so glory, says he, that is opposed against Doeg, that bears with Doeg upon earth, until he remove from his dwelling, and be rooted up from the land of the living. I glory not as if I have not received, but in God I glory. "And I will confess to You because You have done," that is, because You have done not according to my merits, but according to Your mercy. But I have done what? If you recollect, "Before, I was a blasphemer, and a persecutor, and injurious." But you, what have you done? "But mercy I have obtained, because ignorant I did it." [1 Timothy 1:13] "I will confess to You for ever, because You have done."

Source: Exposition on Psalm 52