2 Samuel 14:20-22
English Standard Version
21Then the king said to Joab, "Behold now, I grant this; go, bring back the young man Absalom."
22And Joab fell on his face to the ground and paid homage and blessed the king. And Joab said, "Today your servant knows that I have found favor in your sight, my lord the king, in that the king has granted the request of his servant."