Matthew Poole and continuators on 2 Kings 8:22

22 Yet Edom revolted from under the hand of Judah until this day. Then Libnah revolted at the same time.

For though Ioram had given them a defeat, yet it may seem to have been no great slaughter, but onely a putting them to flight; and therefore they might easily rally again. And Iehoram could not pursue the Victory, because he was recalled by the revolt of his own Subjects, which had took the occasion of his absence, and probably feared that others would follow their example, if they had the like occasion.

A considerable City in Iudah, belonging to the Priests, Ios. 15. 42. and 21. 13.

Why, see 2 Chron. 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.