In his days 1Edom revolted against the rule of Judah and set up a king over themselves.
References for 2 Chronicles 21:8
Then Jehoram crossed over with his commanders and all his chariots with him. And he arose by night and struck down the Edomites who were surrounding him and the commanders of the chariots.
So Edom revolted against Judah to this day. Then Libnah revolted at the same time against his rule, because he had forsaken the LORD God of his fathers.
References for 2 Chronicles 21:10
Moreover, 2he made high places in the mountains of Judah, and caused the inhabitants of Jerusalem 3to play the harlot and led Judah astray.
References for 2 Chronicles 21:11
Then a letter came to him from Elijah the prophet saying, "Thus says the LORD God of your father David, 'Because 4you have not walked in the ways of Jehoshaphat your father 5and the ways of Asa king of Judah,
References for 2 Chronicles 21:12
but 6have walked in the way of the kings of Israel, and have caused Judah and the inhabitants of Jerusalem to play the harlot 7as the house of Ahab played the harlot, and you 8have also killed your brothers, your own family , who were better than you,
References for 2 Chronicles 21:13
behold, the LORD is going to strike your people, your sons, your wives and all your possessions with a great calamity;
References for 2 Chronicles 21:14
and 9you will suffer severe sickness, a disease of your bowels, until your bowels come out because of the sickness, day by day.' "
References for 2 Chronicles 21:15