Now when Jehoram was risen up to the kingdom of his father, he strengthened himself, and slew all his brethren with the sword, and [divers] also of the princes of Israel.
Berean Study Bible (BSB) - 2 Chronicles 21:4 >When Jehoram had established himself over his father’s kingdom, he strengthened himself by putting to the sword all his brothers along with some of the princes of Israel.