2 Samuel 14:2-3

2And Joab sent to Tekoah, and fetched thence a wise woman, and said to her, I pray thee, feign thyself to be a mourner, and put on mourning garments, I pray, and anoint not thyself with oil, but be as a woman that hath a long time mourned for the dead;

3and come to the king, and speak after this manner to him. And Joab put the words into her mouth.