2 Samuel 14:22
And Joab fell to the ground on his face, and bowed himself, and thanked the king: and Joab said, To day thy servant knoweth that I have found grace in thy sight, my lord, O king, in that the king hath fulfilled the request of his servant.
Joab cast himself to the ground on his face before David, bowed himself, and gave thanks to the king because David had fulfilled his servant's request concerning Absalom. That act of thanksgiving belonged to Joab's work of twice securing Absalom's return and reconciliation with David. The confidence thus restored was afterward betrayed when Absalom rose in rebellion against David, bringing great harm in its wake.