5 Jehoram was thirty-two years old when he became king, and he reigned eight years in Jerusalem. 6 And he walked in the way of the kings of Israel, as the house of Ahab had done, for the daughter of Ahab was his wife. And he did what was evil in the sight of the Lord. 7 Yet the Lord was not willing to destroy the house of David, because of the covenant that he had made with David, and since he had promised to give a lamp to him and to his sons forever.
Matthew Henry's Commentary on 2 Chronicles 21:5-7
Commentary on 2 Chronicles 21:1-11
(Read 2 Chronicles 21:1-11)
Jehoram hated his brethren, and slew them, for the same reason that Cain hated Abel, and slew him, because their piety condemned his impiety. In the mystery of Providence such men sometimes prosper for a time; but the Lord has righteous purposes in permitting such events, part of which may now be made out, and the rest will be seen hereafter.