II Samuel 14:2, 19-20

And Joab sent to Tekoa and brought from there a wise woman, and said to her, “Please pretend to be a mourner, and put on mourning apparel; do not anoint yourself with oil, but act like a woman who has been mourning a long time for the dead.

So the king said, “Is the hand of Joab with you in all this?” And the woman answered and said, “As you live, my lord the king, no one can turn to the right hand or to the left from anything that my lord the king has spoken. For your servant Joab commanded me, and he put all these words in the mouth of your maidservant. To bring about this change of affairs your servant Joab has done this thing; but my lord is wise, according to the wisdom of the angel of God, to know everything that is in the earth.”