2 Kings 8:20-22

In Jehoram’s time Edom broke away from Judah’s rule and chose their own king. So Jehoram and all his chariots went to Zair. The Edomites surrounded him and his chariot commanders. Jehoram got up and attacked the Edomites at night, but his army ran away to their tents. From then until now the country of Edom has fought against the rule of Judah. At the same time Libnah also broke away from Judah’s rule.