2 Samuel 14:4, 22

And when the woman of Tekoah spake to the king, she fell on her face to the ground, and did obeisance, and said, Help, O king.

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.