Miserere Mei, Deus (Psalm 50)

Have mercy on me, O God, according to Thy great mercy. And according to the multitude of Thy tender mercies blot out my iniquity. Wash me yet more from my iniquity, and cleanse me from my sin. For I know my iniquity, and my sin is always before me. To Thee only have I sinned, and have done evil before Thee: that Thou mayst be justified in Thy words, and mayst overcome when Thou art judged. Thou shalt sprinkle me with hyssop, and I shall be cleansed: Thou shalt wash me, and I shall be made whiter than snow. Create a clean heart in me, O God: and renew a right spirit within my bowels. Cast me not away from Thy face; and take not Thy holy spirit from me. Restore unto me the joy of Thy salvation, and strengthen me with a perfect spirit. A sacrifice to God is an afflicted spirit: a contrite and humbled heart, O God, Thou wilt not despise.