1 Kings 20:37

33Now the men did diligently observe whether any thing would come from him, and did hastily catch it: and they said, Thy brother Ben–hadad. Then he said, Go ye, bring him. Then Ben–hadad came forth to him; and he caused him to come up into the chariot.

34And Ben–hadad said unto him, The cities, which my father took from thy father, I will restore; and thou shalt make streets for thee in Damascus, as my father made in Samaria. Then said Ahab, I will send thee away with this covenant. So he made a covenant with him, and sent him away.

35And a certain man of the sons of the prophets said unto his neighbour in the word of the Lord, Smite me, I pray thee. And the man refused to smite him.

36Then said he unto him, Because thou hast not obeyed the voice of the Lord, behold, as soon as thou art departed from me, a lion shall slay thee. And as soon as he was departed from him, a lion found him, and slew him.

37Then he found another man, and said, Smite me, I pray thee. And the man smote him, so that in smiting he wounded him.

38So the prophet departed, and waited for the king by the way, and disguised himself with ashes upon his face.

39And as the king passed by, he cried unto the king: and he said, Thy servant went out into the midst of the battle; and, behold, a man turned aside, and brought a man unto me, and said, Keep this man: if by any means he be missing, then shall thy life be for his life, or else thou shalt pay a talent of silver.

40And as thy servant was busy here and there, he was gone. And the king of Israel said unto him, So shall thy judgment be; thyself hast decided it.

41And he hasted, and took the ashes away from his face; and the king of Israel discerned him that he was of the prophets.