2 Samuel 14:2-3

2And 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.

3Go to the king and speak to him in this manner.” So Joab put the words in her mouth.