King James Version
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.English Standard Version
When Jehoram had ascended the throne of his father and was established, he killed all his brothers with the sword, and also some of the princes of Israel.Catholic Public Domain Version
Therefore, Jehoram rose up over the kingdom of his father. And when he had established himself, he killed with the sword all his brothers, and certain ones from the leaders of Israel