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1 Help, LORD; for the godly man ceaseth; for the faithful fail from among the children of men. 2 They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak. 3 The LORD shall cut off all flattering lips, and the tongue that speaketh proud things: 4 Who have said, With our tongue will we prevail; our lips are our own: who is lord over us? 5 For the oppression of the poor, for the sighing of the needy, now will I arise, saith the LORD; I will set him in safety from him that puffeth at him. 6 The words of the LORD are pure words: as silver tried in a furnace of earth, purified seven times. 7 Thou shalt keep them, O LORD, thou shalt preserve them from this generation for ever. 8 The wicked walk on every side, when the vilest men are exalted.
[AD 339] Eusebius of Caesarea on Psalms 12:1
There is no righteous one left anywhere, he said, who can become the author of my deliverance. Truly I lack a Savior, and since there is none, you yourself, Lord, be my Savior.

[AD 430] Augustine of Hippo on Psalms 12:1
"Save me, O Lord, for the holy has failed;" that is, is not found: as we speak when we say, Corn fails, or, Money fails. "For the truths have been minished from among the sons of men" [Psalm 12:1]. The truth is one, whereby holy souls are enlightened: but forasmuch as there are many souls, there may be said in them to be many truths: as in mirrors there are seen many reflections from one face.

[AD 585] Cassiodorus on Psalms 12:1
Since he was observing that this world burdens souls, he asks the Lord to be saved. He knew that genuine medicine can only be found with God.

[AD 399] Evagrius Ponticus on Psalms 12:2
First the righteous fail, then the truth is diminished. Not only is there no truth among the righteous, there is no holiness among honest people. Now, since the righteous have failed, truth is diminished. Perhaps the poverty of righteous people is the reason why so many heresies have shot up.

[AD 430] Augustine of Hippo on Psalms 12:2
"He has talked vanity each man to his neighbour" [Psalm 12:2]. By neighbour we must understand every man: for that there is no one with whom we should work evil; "and the love of our neighbour works no evil." [Romans 13:10] "Deceitful lips, with a heart and a heart they have spoken evil things." The repetition, "with a heart and a heart," signifies a double heart.

[AD 430] Augustine of Hippo on Psalms 12:2
There is a double heart there, not a simple one; it is not what it has within itself that it utters outwardly. The double heart, once upon a time, received this damning judgment: “Deceitful lips in heart and heart have spoken evil.” It should have been enough to say, “In the heart they have spoken evil.” How are lips deceitful? What is deceit? When one thing is done openly, another covered up. Deceitful lips mean a not simple heart; and because it is not a simple heart, that is why “in heart and heart”; that is why “in heart” twice over; because it is a double heart.

[AD 458] Theodoret of Cyrus on Psalms 12:2
Regard for truth is in danger of being snuffed out, with everyone, you might say, suffering from distrust in one another.… They pretend friendship and perform the actions of enemies.… Some use their lips to direct falsehood into their neighbor’s heart; others return the compliment.

[AD 460] Valerian of Cimiez on Psalms 12:2
We shall take care to have nothing base spring from our hearts, nothing blasphemous fly from our lips, nothing harmful harbored in our thought. The prophet condemns not only what offends the ears but also the attitude that some people cherish in their minds. “With deceitful lips and with a double heart they have spoken evil things.” Deliberations, too, then should be listed among the faults of an insolent tongue. Whatever you speak in your heart you are confessing to the Lord, because God is the Searcher of hearts. Since you cannot hide even your thought from him, can that which you shout aloud remain hidden from him or excused? Reflect on this.

[AD 99] Clement of Rome on Psalms 12:3-5
Let us cleave, therefore, to those who cultivate peace with godliness, and not to those who hypocritically profess to desire it. For [the Scripture] says in a certain place, "This people honours me with their lips, but their heart is far from me." [Isaiah 29:13] And again: "They bless with their mouth, but curse with their heart." [Psalm 62:4] And again it says, "They loved Him with their mouth, and lied to Him with their tongue; but their heart was not right with Him, neither were they faithful in His covenant." [Psalm 78:36-37] Let the deceitful lips become silent, [and "let the Lord destroy all the lying lips, ] and the boastful tongue of those who have said, Let us magnify our tongue: our lips are our own; who is lord over us? For the oppression of the poor, and for the sighing of the needy, will I now arise, says the Lord: I will place him in safety; I will deal confidently with him." [Psalm 12:3-5]

[AD 253] Origen of Alexandria on Psalms 12:3
When the Lord wipes out those things that are base, he will destroy those very things, so that when those things that have come on a person unexpectedly have been destroyed, the foremost creation of God whom the baser things had overtaken may take up the higher things.

[AD 407] John Chrysostom on Psalms 12:3
Do you see the solicitude of the inspired author, how he prays for them? The remark is not against them, no, but on their behalf. He did not ask for them to be destroyed, note, but for the evil to be done away with. He did not say “the Lord will destroy them,” note, but the “deceitful lips.” Again, he asks for the destruction not of their being but of their tongue, their folly, their deceit, and for an end to be put to their arrogance.

[AD 430] Augustine of Hippo on Psalms 12:3
"May the Lord destroy all deceitful lips" [Psalm 12:3]. He says "all," that no one may suppose himself excepted: as the Apostle says, "Upon every soul of man that does evil, of the Jew first, and of the Greek." [Romans 2:9] "The tongue speaking great things:" the proud tongue.

[AD 460] Valerian of Cimiez on Psalms 12:3
We find many who occasionally mix poison with sweet words in one and the same conversation and enter into conflicts by feigned persuasions to peace. What can be more unfortunate or dangerous than the case of those people who with all the ardor of their deceitful tongues plot against someone’s life? Why do they fail to consider the prophet’s psalm, which states, “May the Lord destroy sinful lips.” Do you perceive under what a curse one lives who is contriving one plan in his heart and placing another on his tongue

[AD 585] Cassiodorus on Psalms 12:3
Consider the piety of the speaker, for he does not direct his prayer against people, since many of them needed to be converted, but against the vices themselves.

[AD 407] John Chrysostom on Psalms 12:4
“Our lips are our own; who is our master?” These are words of insane and deranged people. For this very reason Paul says the opposite to them in the words, “You are not your own; you were bought at a price,” and bids them not to live for themselves. Your lips are not yours, he is saying, but the Lord’s. He it was, in fact, who made them, who fitted you together, who breathed life into you. But you—what do you have? Not all that we have, by contrast, is ours; for even the possessions we have others have entrusted to us, and the land we lease others have given to us. Exactly so has God let these things out on lease to you, not for you to bear thorns but to convert the seed into something useful; not for you to make folly flourish by them, not for deceit but for humility, benediction and love. He gave you eyes, not to indulge in unrestrained gazing but to embellish them with temperance; and hands, not for striking but for giving alms.

[AD 430] Augustine of Hippo on Psalms 12:4
"Who have said, We will magnify our tongue, our lips are our own, who is Lord over us?" [Psalm 12:4]. Proud hypocrites are meant, putting confidence in their speech to deceive men, and not submitting themselves to God.

[AD 458] Theodoret of Cyrus on Psalms 12:4
With mouths agape they heedlessly utter whatever occurs to them, scornful of divine long-suffering and giving no thought to their falling under the lordship of God.

[AD 430] Augustine of Hippo on Psalms 12:5
"Because of the wretchedness of the needy and the sighing of the poor, now I will arise, says the Lord" [Psalm 12:5]. For so the Lord Himself in the Gospel pitied His people, because they had no ruler, when they could well obey. Whence too it is said in the Gospel, "The harvest is plenteous, but the labourers are few." [Matthew 9:37] But this must be taken as spoken in the person of God the Father, who, because of the needy and the poor, that is, who in need and poverty were lacking spiritual good things, vouchsafed to send His own Son. From thence begins His sermon on the mount to Matthew, where He says, "Blessed are the poor in spirit: for theirs is the kingdom of heaven." [Matthew 5:3] "I will place in salvation." He does not say what He would place: but, "in salvation," must be understood as, in Christ; according to that, "For my eyes have seen Your salvation." [Luke 2:30] And hence He is understood to have placed in Him what appertains to the taking away the wretchedness of the needy, and the comforting the sighing of the poor. "I will deal confidently in Him:" according to that in the Gospel, "For He taught them as one having authority, and not as their scribes." [Matthew 7:29]

[AD 585] Cassiodorus on Psalms 12:5
“I will arise” is a metaphor to indicate that the one who is not familiar with the human need to lie down out of weakness does in fact rise up. But he says I will arise, I will appear and be manifest in the Son. For the strength and majesty of the Father and of the Son are one and undivided. For the Father appears and is manifest in the Son, as Christ himself says in the Gospel: “He who sees me sees the Father also.”

[AD 253] Origen of Alexandria on Psalms 12:6
Although they may be beautiful, the words of those who stand apart from Christ are not pure but interspersed with innumerable lies; the words of the Lord alone are pure, in which there is no lie mixed, and they are true as silver purged and proven in the furnace. When anything is declared with them, it is never to be rejected in doubt.

[AD 339] Eusebius of Caesarea on Psalms 12:6
In the same manner silver is purified by fire after it is drawn through the flame two or three times, nor is that enough, but again and again being purged thoroughly by the furnace, never will it have any false or foreign material, so also the words of the Lord genuinely spoken are full of truth, as pure and undefiled, including no falsehood.

[AD 373] Athanasius of Alexandria on Psalms 12:6
When Israel had left Egypt, God forbade the people to even touch the mountain where he was giving the Law, because they were far from being “on fire” for the Lord. He did, however, call the blessed Moses to that mountain. Moses was totally committed to him and clung to his grace, so God said, “Let Moses alone draw near.” So Moses climbed up the mountain into the cloud, and although that mountain smoked with the heat and presence of the Lord, Moses was unharmed. Rather, through “the words of the Lord, which are pure silver refined in a furnace,” he came down more pure than when he went up.

[AD 390] Diodorus of Tarsus on Psalms 12:6
Since he said that the Lord’s sayings are pure and unmixed with falsehood, he goes on to say that as silver brought into contact with fire is found to be purified of every defilement, so also such commands of God emerge sincere and unaffected by falsehood. The phrase “seven times” means repeatedly, his meaning being that it is exceedingly pure and untainted with falsehood.

[AD 430] Augustine of Hippo on Psalms 12:6
"The words of the Lord" are "pure words" [Psalm 12:6]. This is in the person of the Prophet himself, "The words of the Lord" are "pure words." He says "pure," without the alloy of pretence. For many preach the truth impurely; [Philippians 1:16] for they sell it for the bribe of the advantages of this life. Of such the Apostle says, that they declared Christ not purely. "Silver tried by the fire for the earth." These words of the Lord by means of tribulations approved to sinners. "Purified seven times:" by the fear of God, by godliness, by knowledge, by might, by counsel, by understanding, by wisdom. [Isaiah 11:2] For seven steps also of beatitude there are, which the Lord goes over, according to Matthew, in the same sermon which He spoke on the Mount, "Blessed" are "the poor in spirit, blessed the meek, blessed they that mourn, blessed they which do hunger and thirst after righteousness, blessed the merciful, blessed the pure in heart, blessed the peacemakers." [Matthew 5:3-9] Of which seven sentences, it may be observed how all that long sermon was spoken. For the eighth where it is said, "Blessed" are "they which suffer persecution for righteousness' sake," [Matthew 5:10] denotes the fire itself, whereby the silver is proved seven times. And at the termination of this sermon it is said, "For He taught them as one having authority, and not as their scribes." [Matthew 7:29] Which refers to that which is said in this Psalm, "I deal confidently in Him."

[AD 390] Diodorus of Tarsus on Psalms 12:7
Even if the godless and demons and agitators surround us, even if they besiege us and cut us off, you will render us superior with your help.

[AD 430] Augustine of Hippo on Psalms 12:7
"You, O Lord, shall preserve us, and keep us from this generation to eternity" [Psalm 12:7]: here as needy and poor, there as wealthy and rich.

[AD 458] Theodoret of Cyrus on Psalms 12:7
Guarded by your grace we shall not only escape the wiles of the present generation but shall also be provided with everlasting salvation.

[AD 585] Cassiodorus on Psalms 12:7
Here he consoles us in tribulations while [in heaven] he establishes us in the security of eternity. Here he helps us, but there he glorifies and crowns us. In this way, a most devoted Creator preserves us here in order that we may not perish and that he may bless us there so that we can no longer be miserable in any way.

[AD 390] Diodorus of Tarsus on Psalms 12:8
When you care for us, even if we are abandoned among those guilty of hostility and scheming, we emerge superior on account of the care of the Most High.

[AD 430] Augustine of Hippo on Psalms 12:8
"The ungodly walk in a circle round about" [Psalm 12:8]: that is, in the desire of things temporal, which revolves as a wheel in a repeated circle of seven days; and therefore they do not arrive at the eighth, that is, at eternity, for which this Psalm is entitled. So too it is said by Solomon, "For the wise king is the winnower of the ungodly, and he brings on them the wheel of the wicked.— After Your height You have multiplied the sons of men." For there is in temporal things too a multiplication, which turns away from the unity of God. Hence "the corruptible body weighs down the soul, and the earthy tabernacle presses down the mind that muses upon many things." [Wisdom 9:15] But the righteous are multiplied "after the height of God," when "they shall go from strength to strength."

[AD 585] Cassiodorus on Psalms 12:8
“The wicked walk in a circle” so that they are never able to arrive at the right path, since crooked paths are always associated with bad character.… For this reason, they are not able to attain the rest of the eighth day, for they are always turning backward like wheels.