Psalms 50:3

But what shall we say concerning David, to whom such testimony was borne, and of whom God said, “I have found a man after Mine own heart, David the son of Jesse; and in everlasting mercy have I anointed him?” Yet this very man saith to God, “Have mercy on me, O Lord, according to Thy great mercy; and according to the multitude of Thy compassions, blot out my transgression. Wash me still more from mine iniquity, and cleanse me from my sin. For I acknowledge my iniquity, and my sin is ever before me. Against Thee only have I sinned, and done that which was evil in Thy sight; that Thou mayest be justified in Thy sayings, and mayest overcome when Thou art judged. For, behold, I was conceived in transgressions, and in my sins did my mother conceive me. For, behold, Thou hast loved truth; the secret and hidden things of wisdom hast Thou shown me. …

“David too, of whom the Lord, testifying, says, ‘I found a man after my own heart, David the son of Jesse. With my holy oil I anointed him.’ But he also says to God, ‘Pity me, O God, according to Thy mercy; and according to the multitude of Thy tender mercies, blot out my transgression. Wash me thoroughly from mine iniquity, and cleanse me from my sin. For I know my transgression, and my sin is ever before me.’” Then, alluding to sin which is not subject to the law, in the exercise of the moderation of true knowledge, he adds, “Against Thee only have I sinned, and done evil in Thy sight.” For the Scripture somewhere says, “The Spirit of the Lord is a lamp, searching the recesses of the belly.” And the more of a Gnostic a man becomes by doing right, the nearer is the illuminating Spirit to him. …

But what shall we say concerning David, to whom such testimony was borne, and of whom God said, “I have found a man after mine own heart, David the son of Jesse; and in everlasting mercy have I anointed him?” Yet this very man saith to God, “Have mercy on me, O Lord, according to Thy great mercy; and according to the multitude of Thy compassions, blot out my transgression. Wash me still more from mine iniquity, and cleanse me from my sin. For I acknowledge mine iniquity, and my sin is ever before me. Against Thee only have I sinned, and done that which is evil in Thy sight; that Thou mayest be justified in Thy sayings, and mayest overcome when Thou art judged. For, behold, I was conceived in transgressions, and in sins did my mother conceive me. For, behold, Thou hast loved truth; the secret and hidden things of wisdom hast Thou shown me. …

5. But for what fruit do they desire this? Do they wish me happiness when they learn how near, by Thy gift, I come unto Thee; and to pray for me, when they learn how much I am kept back by my own weight? To such will I declare myself. For it is no small fruit, O Lord my God, that by many thanks should be given to Thee on our behalf, and that by many Thou shouldest be entreated for us. Let the fraternal soul love that in me which Thou teachest should be loved, and lament that in me which Thou teachest should be lamented. Let a fraternal and not an alien soul do this, nor that “of strange children, whose mouth speaketh vanity, and their right hand is a right hand of falsehood,” but that fraternal one which, when it approves me, rejoices for me, but when it disapproves me, is sorry for me; because whether it approves or disapproves it loves me. …

6. Hear therefore these words, and say thou with him: “Have pity upon me, O God, after Thy great mercy” ( ver. 1 ). He that imploreth great mercy, confesseth great misery. Let them seek a little mercy of Thee, that have sinned in ignorance: “Have pity,” he saith, “upon me, after Thy great mercy.” Relieve a deep wound after Thy great healing. Deep is what I have, but in the Almighty I take refuge. Of my own so deadly wound I should despair, unless I could find so great a Physician. “Have pity upon me, O God, after Thy great mercy: and after the multitude of Thy pities, blot out my iniquity.” What he saith, “Blot out my iniquity,” is this, “Have pity upon me, O God.” And what he saith, “After the multitude of Thy pities,” is this, “After Thy great mercy.” Because great is the mercy, many are the mercies; and of Thy great mercy, many are Thy pitying. …

Not merely merciful, but rich in mercy; as it is said also in another place; “In the multitude of thy mercies.” ( Ps. lxix. 17 .) And again, “Have mercy upon me, according to the multitude of thy tender mercies.” ( Ps. li. 1 .)

[4.] Let us now imitate Him. For not only did He now hold His peace, but even came among them again, and being questioned answered and showed the things relating to His foreknowledge; and though called “demoniac” and “madman,” by men who had received from Him ten thousand benefits, and that not once or twice but many times, not only did He refrain from avenging Himself, but even ceased not to benefit them. To benefit, do I say? He laid down His life for them, and while being crucified spake in their behalf to His Father. This then let us also imitate, for to be a disciple of Christ, is the being gentle and kind. But whence can this gentleness come to us? If we continually reckon up our sins, if we mourn, if we weep; for neither doth a soul that dwelleth in the company of so much grief endure to be provoked or angered. …

Let us earnestly emulate her by whom we have been saved; let us love her, let us prize her before wealth, and apart from wealth, let us have a merciful soul. Nothing is so characteristic of a Christian, as mercy. There is nothing which both unbelievers and all men so admire, as when we are merciful. For oftentimes we are ourselves also in need of this mercy, and say to God “Have mercy upon us, after Thy great goodness.” ( Ps. li. 1 .) Let us begin first ourselves: or rather it is not we that begin first. For He has Himself already shown His mercy towards us: yet at least let us follow second. For if men have mercy on a merciful man, even if he has done innumerable wrongs, much more does God.

The whole repentance of a sinner is exhibited to us in the fifty-first psalm written by David after he had gone in unto Bathsheba the wife of Uriah the Hittite, and when, to the rebuke of the prophet Nathan he had replied, “I have sinned.” Immediately that he confessed his fault he was comforted by the words: “the Lord also hath put away thy sin.” He had added murder to adultery; yet bursting into tears he says: “Have mercy upon me, O God, according to thy loving kindness: according unto the multitude of thy tender mercies blot out my transgressions.” A sin so great needed to find great mercy. Accordingly he goes on to say: “Wash me thoroughly from mine iniquity, and cleanse me from my sin. For I acknowledge my transgressions: and my sin is ever before me. …

4. I delayed for a little while the production of proofs from the Old Testament, because, wherever the Old Testament is against them they are accustomed to cry out that the Law and the Prophets were until John. But who does not know that under the other dispensation of God all the saints of past times were of equal merit with Christians at the present day? As Abraham in days gone by pleased God in wedlock, so virgins now please him in perpetual virginity. He served the Law and his own times; let us now serve the Gospel and our times,upon whom the ends of the ages have come. David the chosen one, the man after God’s own heart, who had performed all His pleasure, and who in a certain psalm had said, “Judge me, O Lord, for I have walked in mine integrity: I have trusted also in the Lord and shall not slide. …