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.
"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.
[AD 339] Eusebius of Caesarea on Psalms 52:2
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.