So Joab sent a request to Tekoa and brought from there a wise woman. He instructed her, “Act as if you are observing mourning rites. Put on mourning garments, and do not anoint yourself with oil, but act like a woman who has been mourning over the dead like this for many days.
Jeroboam said to his wife, “Please get up and disguise yourself, so that you will not be recognized as the wife of Jeroboam, and go to Shiloh. Behold, there you will find Ahijah the prophet, who told me that I would be king over this people.
The king of Israel said to Jehoshaphat, “I will disguise myself and enter into the battle, but you wear your robes.” And the king of Israel disguised himself and went into the battle.
“Moreover, when you fast, do not be like the hypocrites with a sad countenance. For they disfigure their faces so they may appear to men to be fasting. Truly I say to you, they have their reward.