2 Samuel 14:2, 19-20

And Joab sent to Tekoa, and fetched thence a wise woman, and said unto her, I pray thee, feign thyself to be a mourner, and put on mourning apparel, I pray thee, and anoint not thyself with oil, but be as a woman that hath a long time mourned for the dead

And the king said, Is the hand of Joab with thee in all this? And the woman answered and said, As thy soul liveth, my lord the king, none can turn to the right hand or to the left from aught that my lord the king hath spoken; for thy servant Joab, he bade me, and he put all these words in the mouth of thy handmaid; to change the face of the matter hath thy servant Joab done this thing: and my lord is wise, according to the wisdom of an angel of God, to know all things that are in the earth.