20 In his days Edom revolted from the rule of Judah, and set up a king of their own.

Matthew Henry's Commentary on 2 Kings 8:20

Commentary on 2 Kings 8:16-24

(Read 2 Kings 8:16-24)

A general idea is given of Jehoram's badness. His father, no doubt, had him taught the true knowledge of the Lord, but did ill to marry him to the daughter of Ahab; no good could come of union with an idolatrous family.