16 And in the fifth year of Joram son of Ahab king of Israel—and Jehoshaphat 'is' king of Judah—hath Jehoram son of Jehoshaphat king of Judah reigned; 17 a son of thirty and two years was he in his reigning, and eight years he hath reigned in Jerusalem. 18 And he walketh in the way of the kings of Israel, as did the house of Ahab, for a daughter of Ahab was to him for a wife, and he doth the evil thing in the eyes of Jehovah, 19 and Jehovah was not willing to destroy Judah, for the sake of David his servant, as He said to him, to give to him a lamp—to his sons all the days. 20 In his days hath Edom revolted from under the hand of Judah, and they cause a king to reign over them, 21 and Joram passeth over to Zair, and all the chariots with him, and he himself hath risen by night, and smiteth Edom, that is coming round about unto him, and the heads of the chariots, and the people fleeth to its tents; 22 and Edom revolteth from under the hand of Judah till this day; then doth Libnah revolt at that time. 23 And the rest of the matters of Joram, and all that he did, are they not written on the book of the Chronicles of the kings of Judah?
Matthew Henry's Commentary on 2 Kings 8:16-23
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.