What does 2 Chronicles 21:10 mean?

Edom stayed independent from Judah from then on. Around the same time, the people of Libnah also rebelled, because Jehoram had turned away from God, the God of his ancestors. 2 Chronicles 21:10 - Modern Text Bible

(Not only Edom, but also Libnah rebelled, and the text links these losses to Jehoram's unfaithfulness to God.)