Their father had lavished them with gifts--silver, gold, and other valuables, plus the fortress cities in Judah. But Jehoram was his firstborn son and he gave him the kingdom of Judah.
But when Jehoram had taken over his father's kingdom and had secured his position, he killed all his brothers along with some of the government officials.
But despite that, because of his covenant with David, GOD was not yet ready to destroy the descendants of David; he had, after all, promised to keep a light burning for David and his sons.
Jehoram responded by setting out with his officers and chariots. Edom surrounded him, but in the middle of the night he and his charioteers broke through the lines and hit Edom hard.
Edom continues in revolt against Judah right up to the present. Even little Libnah revolted at that time. The evidence accumulated: Since Jehoram had abandoned GOD, the God of his ancestors, God was abandoning him.
One day he got a letter from Elijah the prophet. It read, "From GOD, the God of your ancestor David--a message: Because you have not kept to the ways of Jehoshaphat your father and Asa your grandfather, kings of Judah,
but have taken up with the ways of the kings of Israel in the north, leading Judah and Jerusalem away from God, going step by step down the apostate path of Ahab and his crew--why, you even killed your own brothers, all of them better men than you!--
They came to the borders of Judah, forced their way in, and plundered the place--robbing the royal palace of everything in it including his wives and sons. One son, his youngest, Ahaziah, was left behind.
He was thirty-two years old when he became king and reigned for eight years in Jerusalem. There were no tears shed when he died--it was good riddance!--and they buried him in the City of David, but not in the royal cemetery.