2 Chronicles 21:4-7

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. Jehoram was thirty-two years old when he became king, and he reigned in Jerusalem eight years. 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. Nevertheless, because of the covenant the LORD had made with David, the LORD was not willing to destroy the house of David. He had promised to maintain a lamp for him and his descendants forever.