8 In his time Edom made themselves free from the rule of Judah, and took a king for themselves. 9 Then Jehoram went over with his captains and all his war-carriages ... made an attack by night on the Edomites, whose forces were all round him ... on the captains of the war-carriages. 10 So Edom made themselves free from the rule of Judah, to this day: and at the same time Libnah made itself free from his rule; because he was turned away from the Lord, the God of his fathers.
Matthew Henry's Commentary on 2 Chronicles 21:8-10
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.