2 Chronicles 21:8-12

In his days Edom broke away from the rule of Judah, and appointed a king over themselves.

Then Jehoram crossed over with his commanders and all his chariots with him. And he got up at night and struck and killed 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 abandoned the Lord God of his fathers.

Furthermore, he made high places in the mountains of Judah, and caused the inhabitants of Jerusalem to be unfaithful, and led Judah astray.

Then a letter came to him from Elijah the prophet, saying, “This is what the Lord, the God of your father David says: ‘Because you have not walked in the ways of your father Jehoshaphat and the ways of Asa king of Judah,