2 Kings 8:17-22

17Jehoram was thirty-two years old when he became king, and he reigned in Jerusalem eight years.

18And Jehoram walked in the ways of the kings of Israel, just as the house of Ahab had done. For he married a daughter of Ahab and did evil in the sight of the LORD.

19Yet for the sake of His servant David, the LORD was unwilling to destroy Judah, since He had promised to maintain a lamp for David and his descendants forever.

20In the days of Jehoram,1 Edom rebelled against the hand of Judah and appointed their own king. 21So Jehoram2 crossed over to Zair with all his chariots. When the Edomites surrounded him and his chariot commanders, he rose up and attacked by night. His troops, however, fled to their homes.

22So to this day Edom has been in rebellion against the hand of Judah. Likewise, Libnah rebelled at the same time.