Psalm 51:1 in the King James Version
Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions.
Context
1 Have mercy on me, God, according to your loving kindness. According to the multitude of your tender mercies, blot out my transgressions.
2 Wash me thoroughly from my iniquity. Cleanse me from my sin.