1 In thee, O LORD, do I put my trust; let me never be ashamed: deliver me in thy righteousness. 2 Bow down thine ear to me; deliver me speedily: be thou my strong rock, for an house of defence to save me. 3 For thou art my rock and my fortress; therefore for thy name's sake lead me, and guide me. 4 Pull me out of the net that they have laid privily for me: for thou art my strength. 5 Into thine hand I commit my spirit: thou hast redeemed me, O LORD God of truth. 6 I have hated them that regard lying vanities: but I trust in the LORD. 7 I will be glad and rejoice in thy mercy: for thou hast considered my trouble; thou hast known my soul in adversities; 8 And hast not shut me up into the hand of the enemy: thou hast set my feet in a large room. 9 Have mercy upon me, O LORD, for I am in trouble: mine eye is consumed with grief, yea, my soul and my belly. 10 For my life is spent with grief, and my years with sighing: my strength faileth because of mine iniquity, and my bones are consumed. 11 I was a reproach among all mine enemies, but especially among my neighbours, and a fear to mine acquaintance: they that did see me without fled from me. 12 I am forgotten as a dead man out of mind: I am like a broken vessel. 13 For I have heard the slander of many: fear was on every side: while they took counsel together against me, they devised to take away my life. 14 But I trusted in thee, O LORD: I said, Thou art my God. 15 My times are in thy hand: deliver me from the hand of mine enemies, and from them that persecute me. 16 Make thy face to shine upon thy servant: save me for thy mercies' sake. 17 Let me not be ashamed, O LORD; for I have called upon thee: let the wicked be ashamed, and let them be silent in the grave. 18 Let the lying lips be put to silence; which speak grievous things proudly and contemptuously against the righteous. 19 Oh how great is thy goodness, which thou hast laid up for them that fear thee; which thou hast wrought for them that trust in thee before the sons of men! 20 Thou shalt hide them in the secret of thy presence from the pride of man: thou shalt keep them secretly in a pavilion from the strife of tongues. 21 Blessed be the LORD: for he hath shewed me his marvellous kindness in a strong city. 22 For I said in my haste, I am cut off from before thine eyes: nevertheless thou heardest the voice of my supplications when I cried unto thee. 23 O love the LORD, all ye his saints: for the LORD preserveth the faithful, and plentifully rewardeth the proud doer. 24 Be of good courage, and he shall strengthen your heart, all ye that hope in the LORD.
[AD 399] Evagrius Ponticus on Psalms 31:1
Not only does God free us into righteousness but also into temperance, fortitude and love. He uses “righteousness” to embrace all virtues. Perhaps he understands “Christ” for “righteousness.” “He is made wisdom to us by God and our righteousness and sanctification and redemption.”

[AD 430] Augustine of Hippo on Psalms 31:1
"In You, O Lord, have I trusted, let Me not be put to confusion for ever" [Psalm 31:1]. In You, O Lord, have I trusted, let Me never be confounded, while they shall insult Me as one like other men. "In Your righteousness rescue Me, and deliver Me." And in Your righteousness rescue Me from the pit of death, and deliver Me out of their company.

[AD 585] Cassiodorus on Psalms 31:1
He rightly made an appeal for the Lord’s justice, since he knew that he would suffer at the hands of the unjust. What a truly amazing and divine exchange! He received death and gave salvation in return; he endured injuries and distributed honors; he took upon himself pain and conferred safety. He is both unique and fully devoted who offered sweet things when he received what was bitter.

[AD 430] Augustine of Hippo on Psalms 31:2
"Bend down Your ear unto Me" [Psalm 31:2]. Hear Me in My humiliation, near at hand unto Me. "Make haste to deliver Me." Defer not to the end of the world, as with all who believe in Me, My separation from sinners. "Be unto Me a God who protects Me." Be unto Me God, and Protector. "And a house of refuge, that You may save Me." And as a house, wherein taking refuge I may be saved.

[AD 460] Arnobius the Younger on Psalms 31:2
God rescues and frees the one who puts his hope in him. He bends his ear to them, and he snatches them … so that they are saved.

[AD 399] Evagrius Ponticus on Psalms 31:3
He leads through right faith and works and nourishes through his own understanding.

[AD 430] Augustine of Hippo on Psalms 31:3
"For You are My strength, and My refuge" [Psalm 31:3]. For You are unto Me My strength to bear My persecutors, and My refuge to escape them. "And for Your Name's sake You shall be My guide, and shall nourish Me." And that by Me You may be known to all the Gentiles. I will in all things follow Your will; and, by assembling, by degrees, Saints unto Me, You shall fulfil My body, and My perfect stature.

[AD 458] Theodoret of Cyrus on Psalms 31:3
Now, through all the verses occurring here, at any rate, we learn the measure of his prudence: his appeal for divine assistance is made on the basis not of his own virtue but of God’s name and of God’s righteousness and because he hoped in him.

[AD 430] Augustine of Hippo on Psalms 31:4
"You shall bring Me out of this trap, which they have hidden for Me" [Psalm 31:4]. You shall bring Me out of these snares, which they have hidden for Me. "For You are My Protector."

[AD 458] Theodoret of Cyrus on Psalms 31:4
By this he indicated the plot of Ahithophel, which he put into operation against him, as we have spoken about previously. … After frequently encountering many disasters I was freed from them by your aid—thus I entrust my soul to your providence. He calls providence here once again “hands.”

[AD 585] Cassiodorus on Psalms 31:4
The snare was certainly hidden by the enemies, but there was not one which could be hidden from Christ, nor did he fall into death by being deceived, but consciously he accepted it in order to liberate us. So the Jews hid a trap for Christ because they believed that he was only a man, and they were devising a plan to destroy him by an ambush. So he says that he will be brought out, in other words, by the kindness of the resurrection he will be raised quickly to the heavenly realms.

[AD 61] Luke on Psalms 31:5
And it was about the sixth hour, and there was a darkness over all the earth until the ninth hour. And the sun was darkened, and the veil of the temple was rent in the midst. And when Jesus had cried with a loud voice, he said, Father, into thy hands I commend my spirit: and having said thus, he gave up the ghost. [Psalms 31:5] Now when the centurion saw what was done, he glorified God, saying, Certainly this was a righteous man. And all the people that came together to that sight, beholding the things which were done, smote their breasts, and returned. And all his acquaintance, and the women that followed him from Galilee, stood afar off, beholding these things.
[AD 399] Evagrius Ponticus on Psalms 31:5
Here spirit indicates mind. The mind that clings to God is one spirit.

[AD 428] Theodore of Mopsuestia on Psalms 31:5
Now, it is to be noted that the Lord cited this verse when on the cross, not that it was said of him in prophetic manner, as some commentators think, but because these words suited him when exposed to the risk of death and passion. So he cited this verse at the time when his soul was separated from his body, and [he] rightly entrusted it to the Father so that he might restore it to his body when it was in need of it at the time of the resurrection.

[AD 430] Augustine of Hippo on Psalms 31:5
"Into Your hands I commend My Spirit" [Psalm 31:5]. To Your power I commend My Spirit, soon to receive It back. "You have redeemed Me, O Lord God of truth." Let the people too, redeemed by the Passion of their Lord, and joyful in the glorifying of their Head, say, "You have redeemed me, O Lord God of truth."

[AD 585] Cassiodorus on Psalms 31:5
Let us consider why these words have been placed here which the Gospel text quotes.… Certainly so that you may recognize that here too he spoke who so many centuries later would speak the same words when fixed on the cross. “Into your hands” means “Into your truth” by which you always perform what is kind and just. In this way, he commends to the Father the inestimable treasure, namely, that soul that regularly carried out the Fathers desires in complete compliance with the Father’s intention. It was therefore fitting that such a spirit be commended to such a great guardian. Next he testifies that he was redeemed. But let us examine at what price; it was the price which the Apostle indicates: “He emptied himself, taking on the form of a servant.” You see how great the price was that he brought his majesty as low as human flesh, and he emptied himself in order that he might fill human things with heavenly things.

[AD 428] Theodore of Mopsuestia on Psalms 31:6
You hated them and rebuffed those paying constant attention to doing wrong; far from doing evil in the heat of passion, they involve themselves in the practice of evil as though an obligation (the sense of “paid constant attention”). By “futile things” he refers to the wrongdoing. By “in vain” he means that they got no benefit from their involvement in evildoing because of his hating and punishing them and not allowing them to bring to completion the object of their efforts.

[AD 430] Augustine of Hippo on Psalms 31:6
"Thou hatest them that hold to vanity uselessly" [Psalm 31:6]. Thou hatest them that hold to the false happiness of the world. "But I have trusted in the Lord."

[AD 585] Cassiodorus on Psalms 31:6
“I will hope in the Lord,” in whom there is nothing empty, … but everything remains fixed and whole.

[AD 430] Augustine of Hippo on Psalms 31:7
"I will be glad, and rejoice in Your mercy:" which does not deceive me. "For You have regarded My humiliation:" wherein You have subjected me to vanity in hope. [Romans 8:20] "You have saved my soul from necessities" [Psalm 31:7]. You have saved my soul from the necessities of fear, that with a free love it may serve You.

[AD 585] Cassiodorus on Psalms 31:7
Let us give attention to the one who says that his humility was respected. It is he who both created heaven and earth and holds them intact, he whom the heavenly powers serve. But there was humility in the Most High for this reason, because also a true human nature was connected to him, made perfect from his very conception.

[AD 399] Evagrius Ponticus on Psalms 31:8
The reasons of temptation, when they are realized, provide a broad plane for the soul.

[AD 430] Augustine of Hippo on Psalms 31:8
"And hast not shut me up into the hands of the enemy" [Psalm 31:8]. And hast not shut me up, that I should have no opening for recovering unto liberty, and be given over for ever into the power of the devil, ensnaring me with the desire of this life, and terrifying me with death. "You have set my feet in a large room." The resurrection of my Lord being known, and my own being promised me, my love, having been brought out of the straits of fear, walks abroad in continuance, into the expanse of liberty.

[AD 399] Evagrius Ponticus on Psalms 31:9
Nothing darkens the mind like unbridled wrath.

[AD 430] Augustine of Hippo on Psalms 31:9
"Have mercy on me, O Lord, for I am troubled" [Psalm 31:9]. But what is this unlooked-for cruelty of the persecutors, striking such dread into me? "Have mercy on me, O Lord." For I am now no more alarmed for death, but for torments and tortures. "My eye has been disordered by anger." I had my eye upon You, that You should not abandon me: You are angry, and hast disordered it. "My soul, and my belly." By the same anger my soul has been disturbed, and my memory, whereby I retained what my God has suffered for me, and what He has promised me.

[AD 435] John Cassian on Psalms 31:9
The deadly poison of anger has to be utterly rooted out from the inmost corners of our soul. For as long as this remains in our hearts and blinds with its hurtful darkness the eye of the soul, we can neither acquire right judgment and discretion nor gain the insight that springs from an honest gaze or ripeness of counsel, nor can we be partakers of life, or retentive of righteousness or even have the capacity for spiritual and true light: “for,” says one, “my eye is disturbed by reason of anger.”

[AD 585] Cassiodorus on Psalms 31:9
When the flesh perceived that dangers were looming, it was troubled by fear. Note that he frequently says that he was troubled, but nowhere indicates that he despaired. This was spoken by him in order that the heavenly Master might display this pattern for us to imitate. Distress seeks out the human race to foster a familiar relationship with God, but despair does not stem from divine holiness.

[AD 99] Clement of Rome on Psalms 31:10
Let your children take part in the instruction that is in Christ, let them learn how powerful with God is humility, how strong is a pure love, how the fear of him is beautiful and great and saves those who live in it in holiness with a pure mind. For he is a searcher of thoughts and desires; his breath is in us, and when he wills, he will take it away.

[AD 430] Augustine of Hippo on Psalms 31:10
"For my life has failed in pain" [Psalm 31:10]. For my life is to confess You, but it failed in pain, when the enemy had said, Let them be tortured until they deny Him. "And my years in groanings." The time that I pass in this world is not taken away from me by death, but abides, and is spent in groanings. "My strength has been weakened by want." I want the health of this body, and racking pains come on me: I want the dissolution of the body, and death forbears to come: and in this want my confidence has been weakened. "And my bones have been disturbed." And my steadfastness has been disturbed.

[AD 430] Augustine of Hippo on Psalms 31:11
"I have been made a reproach above all mine enemies" [Psalm 31:11]. All the wicked are my enemies; and nevertheless they for their wickednesses are tortured only till they confess: I then have overpassed their reproach, I, whose confession death does not follow, but racking pains follow upon it. "And to my neighbours too much." This has seemed too much to them, who were already drawing near to know You, and to hold the faith that I hold. "And a fear to mine acquaintance." And into my very acquaintance I struck fear by the example of my dreadful tribulation. "They that did see me, fled without from me." Because they did not understand my inward and invisible hope, they fled from me into things outward and visible.

[AD 585] Cassiodorus on Psalms 31:11
Christ the Lord, though innocent and undefiled, was being considered a disgrace among those who were desecrating themselves with wicked sin.… A disgrace indicates a terribly heinous act, what the evil Jews were convinced had been committed by our Lord Savior when they said: “This man is not from God, who does not keep the Sabbath,” and elsewhere: “You are a Samaritan and have a demon.”

[AD 430] Augustine of Hippo on Psalms 31:12
"I have been forgotten, as one dead from the heart" [Psalm 31:12]. And they have forgotten me, as if I were dead from their hearts. "I have become as a lost vessel." I have seemed to myself to be lost to all the Lord's service, living in this world, and gaining none, when all were afraid to join themselves unto me.

[AD 458] Theodoret of Cyrus on Psalms 31:12
Everyone has given me up for lost, he is saying, like a vessel mislaid or a corpse occupying a tomb. He brought out the degree of forgetfulness by reference to the worthless vessel: just as when lost it vanishes from the memory of the losers for reason of its worthlessness, he is saying, so too am I in their estimation like someone nonexistent and have become deserving of no esteem.

[AD 585] Cassiodorus on Psalms 31:12
Those who do not believe the Scriptures at all saw the Lord fixed on the cross and walked away from his divinity, anticipating that their expectation was ended by this death. Likewise heretics, who hear the divine Scriptures in the church and who see miracles, walk away from the church to hear wicked proclamations, fleeing from the truth in which they have little tolerance to continue on.… “A ruined vessel” is one that is broken and without purpose, and so it is always thrown away. So also Jesus, when he died, was considered by unbelievers to be like a broken vessel that should be thrown away. How could it be said more humbly than that the almighty Majesty be compared to fragile jars? But consider that it was those who were mad who thought about Christ this way. But there always existed in him a unique omnipotence and an amazing divine fullness.

[AD 430] Augustine of Hippo on Psalms 31:13
"For I have heard the rebuking of many dwelling by in a circuit" [Psalm 31:13]. For I have heard many rebuking me, in the pilgrimage of this world near me, following the circuit of time, and refusing to return with me to the eternal country. "Whilst they were assembling themselves together against me, they conspired that they might take my soul." That my soul, which should by death easily escape from their power, might consent unto them, they imagined a device, whereby they would not suffer me even to die.

[AD 430] Augustine of Hippo on Psalms 31:14
"But I have hoped in You, O Lord; I have said, You are my God" [Psalm 31:14]. For You have not changed, that You should not save, Who dost correct.

[AD 585] Cassiodorus on Psalms 31:14
The order of the words is wonderful and most holy. When his enemies … held on to a hope in their own strength, he says that he put his hope in the Lord, since he knew that their power was nothing and by the plots they were attempting they would kill themselves rather than him.… The Lord Christ says: “You are my God,” but he says this from the perspective of the human nature that he assumed, which, as he says later, was subject both to time and to death. He does not, as his enemies were thinking, mention that his life was going to be ended by their persecution, but he commends the times of his life to the Lord. For we exist by his work as our Creator; we are enlivened as he determines; and we also pass on when he gives the command. For this reason, it is necessary that his hope be set on the Lord, for he knew that his life and his death were under God’s control.

[AD 390] Diodorus of Tarsus on Psalms 31:15
He says “my lot” in the sense of all my relief and all my tribulation. Since everyone has times when they are distressed and times when they are also made happy, he means, “my lot,” the times allotted to me for being made glad and for being distressed, all these are “in your hands” and capable of being changed as you wish.

[AD 430] Augustine of Hippo on Psalms 31:15
"In Your hands" are "my lots" [Psalm 31:15]. In Your power are my lots. For I see no desert for which out of the universal ungodliness of the human race You have elected me particularly to salvation. And though there be with You some just and secret order in my election, yet I, from whom this is hid, have attained by lot unto my Lord's vesture. [John 19:24] "Deliver me from the hands of mine enemies, and from them that persecute me."

[AD 390] Diodorus of Tarsus on Psalms 31:16
Since it seemed as though God had turned away from them and was angry with them, he asks for reconciliation: Only have regard to me, he is saying, and it is sufficient for my salvation.

[AD 430] Augustine of Hippo on Psalms 31:16
"Make Your Face to shine upon Your servant" [Psalm 31:16]. Make it known to men, who do not think that I belong unto You, that Your Face is bent upon me, and that I serve You. "Save me in Your mercy."

[AD 9999] Pseudo-Athanasius on Psalms 31:16
In this I trust, that I shall be saved if you make your face to shine on me, hiding your back from me.

[AD 430] Augustine of Hippo on Psalms 31:17
"O Lord, let me not be confounded, for I have called upon You" [Psalm 31:17]. O Lord, let me not be put to shame by those who insult me, for that I have called upon You. "Let the ungodly be ashamed, and be brought down to hell." Let them rather who call upon stones be ashamed, and made to dwell with darkness.

[AD 585] Cassiodorus on Psalms 31:17
In saying, “Save me in your mercy,” he denies his own merit. He constantly repeats the same things in order to teach us, nor does he ever become weary of his beloved confession, because the sweetness of the truth does not become distasteful to him. He also adds: “Lord, may I not be put to shame, for I have called upon you.” Wonderful and complete is this proclamation which contains both the petition of a humble person and the indestructible strength of one who believes. So he asks not he not be put to shame by God failing to answer his prayer. But how does he believe that he is heard? “For I have called on you.” Calling upon the Lord in faith is an act which finds favor rather than insulting God, for the one who calls cannot at all be deceived, assuming that he is heard by God.

[AD 399] Evagrius Ponticus on Psalms 31:18
One who speaks falsely receives mercy when he becomes silent. He gives up deceit.

[AD 430] Augustine of Hippo on Psalms 31:18
"Let the deceitful lips be made dumb" [Psalm 31:18]. In making known to the peoples Your mysteries wrought in me, strike with dumb amazement the lips of them that invent falsehood of me. "Which speak iniquity against the Righteous, in pride and contempt." Which speak iniquity against Christ, in their pride and contempt of Him as a crucified man.

[AD 386] Cyril of Jerusalem on Psalms 31:19
The sum of your sins does not surpass the magnitude of God’s mercies. Your wounds are not beyond the healing skill of the great Physician. Only surrender to him with faith, tell the Physician of your malady. Repeat the words of David: “I said, I will confess against myself my iniquity to the Lord,” and in like manner will be verified the second part of the verse: “And you forgave the wickedness of my heart.”

[AD 430] Augustine of Hippo on Psalms 31:19
"How great" is "the multitude of Your sweetness, O Lord" [Psalm 31:19]. Here the Prophet exclaims, having sight of all this, and admiring how manifoldly plenteous is Your sweetness, O Lord. "Which You have hid for them that fear You." Even those, whom Thou correctest, You love much: but lest they should go on negligently from relaxed security, Thou hidest from them the sweetness of Your love, for whom it is profitable to fear You. "You have perfected it for them that hope in You." But You have perfected this sweetness for them that hope in You. For Thou dost not withdraw from them what they look for perseveringly even unto the end. "In sight of the sons of men." For it does not escape the notice of the sons of men, who now live no more after Adam, but after the Son of Man. "You will hide them in the hidden place of Your Countenance:" which seat You shall preserve for everlasting in the hidden place of the knowledge of You for them that hope in You. "From the troubling of men." So that now they suffer no more trouble from men.

[AD 430] Augustine of Hippo on Psalms 31:19
From the law comes our fear of God, from faith our hope in him; but grace is hidden from those who are in fear of punishment. The soul that labors under that fear, not yet victorious over evil concupiscence and still held in the stern ward of that same fear, must take refuge by faith with the mercy of God, that he may grant what he commands, impart the sweet savor of grace and by his Holy Spirit make the delight of his precepts greater than the attraction that obstructs the keeping of them. Thus that “countless sum of his sweetness,” the law of faith that is the love of him written and shed abroad in our hearts, is perfected to them that hope in him, so that the healed soul may work that which is good, not in fear of punishment but through love of righteousness.

[AD 458] Theodoret of Cyrus on Psalms 31:19
Now, the verse has this sense: You hide the rewards and prizes for those who fear you, O Lord, many and great and marvelous though these are, and instead you allow them to struggle with sweat and tears. Yet there comes the time when you reveal the rewards, giving cheer to the athletes.… Then he described in detail the providence in their favor.… Your appearance suffices, he is saying (he calls it “presence”), for them to be freed from all human disturbance and commotion, and to conceal them as though admitted to the precincts of some tabernacle and render them invisible.

[AD 585] Cassiodorus on Psalms 31:19
There is an abundance of sweetness, for the Lord’s sweetness is expressed by the many benefits that he gives. He is sweet when he corrects, sweet when he pardons, and sweet when he promises eternal rewards to believers. But you must understand that he is only sweet to those who have acquired a taste for him. His sweetness cannot come to those who have not deserved to experience him.

[AD 395] Gregory of Nyssa on Psalms 31:20
God’s abounding goodness aids us in a hidden way, and in the present life it is not clearly evident. For every objection of unbelievers would be removed, could we actually see what we only hope for. But our hopes await the ages to come, so that there may then be revealed what at present our faith alone apprehends.

[AD 430] Augustine of Hippo on Psalms 31:20
"You will protect them in Your tabernacle from the contradiction of tongues" [Psalm 31:20]. But here meanwhile while evil tongues murmur against them, saying, Who has come thence? You will protect them in the tabernacle, that of faith in those things, which the Lord wrought and endured for us in time.

[AD 460] Arnobius the Younger on Psalms 31:20
Although the just suffer trials in this age, a greater sweetness awaits them, if they persevere to the future, which the Lord hides meanwhile for those who fear him. He does not wish to show it in this age, so he may complete it for the ones hoping in him in the presence of those who mock them. Now he hides them in the secret of his presence from the vexation of people.… Then he magnifies his mercy when he prepares a fortified city, which angels surround, the mother city of holy Jerusalem.

[AD 430] Augustine of Hippo on Psalms 31:21
"Blessed be the Lord; for He has made His mercy marvellous, in the city of compassing" [Psalm 31:21]. Blessed be the Lord, for after the correction of the sharpest persecutions He has made His mercy marvellous to all throughout the world, in the circuit of human society.

[AD 458] Theodoret of Cyrus on Psalms 31:21
He surrounded and enclosed me in his habitual lovingkindness, he is saying, as the inhabitants encircle a city with a strong rampart.

[AD 585] Cassiodorus on Psalms 31:21
We should regard the “surrounded city” as the physical location of Jerusalem, which is set in the midst of the nations and is known to exist as the temple of God. The nations that are located around it were worthy to receive the precepts of the Christian teaching, as if the purest of springs opened itself up to them, and they were irrigated with the gifts of heavenly life. So in this city the Lord “has made his mercy wonderful,” since it was there in fact that he deemed it fitting to teach, to perform miracles, and to suffer for human salvation. There too he revealed the glory of his resurrection, where he chose to make known such immense mysteries.

[AD 235] Hippolytus of Rome on Psalms 31:22
The mercy of God is not so "marvellous" when it is shown in humbler cities as when it is shown in "a strong city," and for this reason "God is to be blessed."

[AD 430] Augustine of Hippo on Psalms 31:22
"I said in my ecstasy" [Psalm 31:22]. Whence that people again speaking says, I said in my fear, when the heathen were raging horribly against me. "I have been cast forth from the sight of Your eyes." For if You had regard to me, You would not suffer me to endure these things. "Therefore You heard, O Lord, the voice of my prayer, when I cried unto You." Therefore putting a limit to correction, and showing that I have part in Your care, You heard, O Lord, the voice of my prayer, when I raised it high out of tribulation.

[AD 458] Theodoret of Cyrus on Psalms 31:22
This psalm is likely to have been spoken by blessed David at the time of being pursued by Absalom.… I thought that on falling into sin, he is saying, I was far from your care; but you took account of my humble words and did not despise me in my need. Now, he rightly called his sin “departure”: after treading the way of righteousness he left it and turned aside; but he stumbled and fell foul of bloodthirsty brigands. This very thing reveals David’s virtue: he was not in the habit of sinning, but departing a little from his chosen course he suffered that awful slide.

[AD 390] Diodorus of Tarsus on Psalms 31:23
He repays extraordinarily those who are guilty of arrogance so as to bring out that God loathes this transgression more than every other sin.

[AD 430] Augustine of Hippo on Psalms 31:23
"Love the Lord, all you His saints" [Psalm 31:23]. The Prophet again exhorts, having sight of these things, and says, "Love the Lord, all you His saints; for the Lord will require truth." Since "if the righteous shall scarcely be saved, where shall the sinner and the ungodly appear?" [1 Peter 4:18] "And He will repay them that do exceeding proudly." And He will repay them who even when conquered are not converted, because they are very proud.

[AD 458] Theodoret of Cyrus on Psalms 31:23
You who pass through the present life with divine hope, strengthen your souls with bravery and heed the directions of the pilot, traveling wherever he leads.

[AD 585] Cassiodorus on Psalms 31:23
When he has completed a hymn on the kindnesses granted to him, he urges the saints to love the Lord, since his members love the Author of such a kindness when they recognize that it has been bestowed on their Head. “Love” he says, now as to his friends, not as if speaking to servants, for fear is characteristic of servants, but love characterizes the relationship between friends.

[AD 430] Augustine of Hippo on Psalms 31:24
"Quit you like men, and let your heart be strengthened" [Psalm 31:24]: working good without fainting, that you may reap in due season. "All you who trust in the Lord:" that is, you who duly fear and worship Him, trust ye in the Lord.

[AD 460] Arnobius the Younger on Psalms 31:24
There will be a judgment in which the Lord will require truth and he will repay the haughty. Be strong; flag not; let your heart be comforted. Be secure, you who hope in the Lord.

[AD 585] Cassiodorus on Psalms 31:24
This is the power of the entire psalm and in it the usefulness of the sacred passion is concentrated … namely, that they not be frightened by the sufferings predicted, but that the hearts of the faithful find strength for the glorious imitation that they knew had been introduced to provide the healing of salvation for the world.… So this is an appeal to good people not to withdraw themselves from their good intention because of the weakness of their flesh.… For in this way, the hearts of those who endure are strengthened, if they fortify their hope through the Lord’s power.