2 Kings 8:16-22

And in the fifth year of Joram the son of Ahab king of Israel, Jehoshaphat being then king of Judah, Jehoram the son of Jehoshaphat king of Judah began to reign. Thirty and two years old was he when he began to reign; and he reigned eight years in Jerusalem. And he walked in the way of the kings of Israel, as did the house of Ahab: for he had the daughter of Ahab to wife; and he did that which was evil in the sight of Jehovah. Howbeit Jehovah would not destroy Judah, for David his servant’s sake, as he promised him to give unto him a lamp for his children alway. In his days Edom revolted from under the hand of Judah, and made a king over themselves. Then Joram passed over to Zair, and all his chariots with him: and he rose up by night, and smote the Edomites that compassed him about, and the captains of the chariots; and the people fled to their tents. So Edom revolted from under the hand of Judah unto this day. Then did Libnah revolt at the same time.