David has done the worst thing of his life. He has taken Bathsheba. He has arranged Uriah’s death. Nathan has stood in front of him and named it. The verdict has fallen. Now David does the only thing left to do: he goes to the Great King.

Psalm 51’s superscription tells us exactly when it was written, when Nathan the prophet came to him, after he had gone in to Bathsheba.

David opens with the only appeal that could work: “Have mercy upon me, O God, according to thy lovingkindness: according unto the multitude of thy tender mercies blot out my transgressions” (Psalm 51:1).

The word translated “lovingkindness” is hesed, the Great King’s loyal, unbreakable covenant love that holds the relationship together from his side. David makes no case for himself. His record is disqualified.

He appeals entirely to the Great King’s own character, declared to Moses in Exodus 34:6–7. Your hesed is the only ground I have left.

Then he names what he did, plainly: “For I acknowledge my transgressions: and my sin is ever before me. Against thee, thee only, have I sinned, and done this evil in thy sight” (Psalm 51:3–4).

The appeal rests entirely on the Great King’s own character.