2 And he had brethren, the sons of Jehoshaphat: Azariah and Jehiel, and Zechariah, and Azariah, and Michael, and Shephatiah: all these were sons of Jehoshaphat king of Israel. 3 And their father had given them great gifts of silver and of gold and of precious things, besides fortified cities in Judah; but the kingdom he gave to Jehoram, for he was the firstborn. 4 And Jehoram established himself over the kingdom of his father, and strengthened himself; and he slew all his brethren with the sword, and [certain] also of the princes of Israel.
Matthew Henry's Commentary on 2 Chronicles 21:2-4
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.