Edom revolted; for though Joram had given them a defeat, yet it may seem to have been no great slaughter, but only a putting them to flight; and therefore they might easily rally again. And Joram could not pursue the victory, because he was recalled by the revolt of his own subjects, which had taken the occasion of his absence, and probably feared that others would follow their example, if they had the like occasion. Libnah; a considerable city in Judah, belonging to the priests, Joshua 15:42, Joshua 21:13. Why Libnah revolted, see 2 Chronicles 21:10,11. It is probable they returned to their obedience, because those words, unto this day, which are added to the former clause, are omitted here.
Related Commentaries of 2 Kings 8:22
2 Kings 8:22
22 Yet Edom revolted from under the hand of Judah unto this day. Then Libnah revolted at the same time.