New Living Translation
Have mercy on me, O God, because of your unfailing love. Because of your great compassion, blot out the stain of my sins.

American Standard Version
Have mercy upon me, O God, according to thy lovingkindness: According to the multitude of thy tender mercies blot out my transgressions.

Berean Study Bible
For the choirmaster. A Psalm of David. When Nathan the prophet came to him after his adultery with Bathsheba. Have mercy on me, O God, according to Your loving devotion; according to Your great compassion, blot out my transgressions.

Douay-Rheims Bible
Unto the end, a psalm of David, when Nathan the prophet came to him after he had sinned with Bethsabee. Have mercy on me, O God, according to thy great mercy. And according to the multitude of thy tender mercies blot out my iniquity.

English Revised Version
For the Chief Musician. A psalm of David: when Nathan the prophet came unto him, after he had gone in to Bath-sheba. Have mercy upon me, O God, according to thy lovingkindness; according to the multitude of thy tender mercies blot out my transgressions.

King James Bible
To the chief Musician, A Psalm of David, when Nathan the prophet came unto him, after he had gone in to Bathsheba. Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions.

World English Bible
Have mercy on me, God, according to your loving kindness. According to the multitude of your tender mercies, blot out my transgressions.

Young's Literal Translation
To the Overseer. -- A Psalm of David, in the coming in unto him of Nathan the prophet, when he hath gone in unto Bath-Sheba. Favour me, O God, according to Thy kindness, According to the abundance of Thy mercies, Blot out my transgressions.

Psalm 51:1 Additional Translations ...