2 Chronicles 21:1-4

1Now Jehoshaphat slept with his fathers, and was buried with his fathers in the city of David. And Jehoram his son reigned in his stead.

2And he had brethren the sons of Jehoshaphat, Azariah, and Jehiel, and Zechariah, and Azariah, and Michael, and Shephatiah: all these were the sons of Jehoshaphat king of Israel.

3And their father gave them great gifts of silver, and of gold, and of precious things, with fortified cities in Judah: but the kingdom he gave to Jehoram; because he was the firstborn.

4Now when Jehoram had risen to the kingdom of his father, he strengthened himself, and slew all his brethren with the sword, and others also of the princes of Israel.