2 Chronicles 21:1-11

Jehoshaphat slept with his fathers [in death] and was buried with them in the City of David; and his son Jehoram became king in his place. He had brothers, the sons of Jehoshaphat: Azariah, Jehiel, Zechariah, Azaryahu, Michael, and Shephatiah. All of these were the sons of Jehoshaphat king of Israel. Their father gave them many gifts of silver, gold, and valuable things, in addition to fortified cities in Judah; but he gave the kingdom to Jehoram because he was the firstborn. When Jehoram had ascended over the kingdom of his father and made himself secure, he killed all his brothers with the sword [to eliminate any rivals], and some of the leaders of Israel as well. Jehoram was thirty-two years of age when he became king, and he reigned eight years in Jerusalem. He walked in the way of the kings of Israel, just as the house of Ahab had done (for he married the daughter of Ahab), and he did what was evil in the sight of the LORD. Yet the LORD would not destroy the house of David because of the covenant which He had made with David, and because He had promised to give a lamp to him and to his sons forever. [2 Sam 7:12-17; 1 Kin 11:36; Ps 132:17] In the days of Jehoram Edom revolted against the rule of Judah and set up a king over themselves. Then Jehoram crossed over [the Jordan River] with his commanders and all his chariots, and rose up by night and struck down the Edomites who were surrounding him and the commanders of the chariots. So Edom revolted against the rule of Judah to this day. Then Libnah revolted at the same time against Jehoram’s rule, because he had abandoned (turned away from) the LORD God of his fathers. Moreover, he made [idolatrous] high places in the hill country of Judah, and caused the inhabitants of Jerusalem to be unfaithful [to God], and he led Judah astray [compelling the people’s cooperation].