2 Chronicles 21:1-6New International Version

21 Then Jehoshaphat rested with his ancestors and was buried with them in the City of David. And Jehoram his son succeeded him as king. 2 Jehoram’s brothers, the sons of Jehoshaphat, were Azariah, Jehiel, Zechariah, Azariahu, Michael and Shephatiah. All these were sons of Jehoshaphat king of Israel.[a] 3 Their father had given them many gifts of silver and gold and articles of value, as well as fortified cities in Judah, but he had given the kingdom to Jehoram because he was his firstborn son.

Jehoram King of Judah

4 When Jehoram established himself firmly over his father’s kingdom, he put all his brothers to the sword along with some of the officials of Israel. 5 Jehoram was thirty-two years old when he became king, and he reigned in Jerusalem eight years. 6 He followed the ways of the kings of Israel, as the house of Ahab had done, for he married a daughter of Ahab. He did evil in the eyes of the Lord.