So at that time King Jehoram set out from Samaria and mobilized all Israel.
Jehoram has no sooner got the sceptre into his hand than he takes the sword into his hand, to reduce Moab. Crowns bring great cares and perils to the heads that wear them; no sooner in honour than in war. Now here we have, I. The concerting of this expedition between Jehoram king of Israel and Jehoshaphat king of Judah.
Commenting on 2 Kings 3:6-19
And he said, which way shall we go up.... That is, Jehoram said so to Jehoshaphat, consulting with him which was the best way to take to the land of Moab, whether the shortest way, over Jordan; or some other: and he answered, the way through the wilderness of Edom; which bordered upon it, and the same through which the Israelites passed; for Kadesh was...
ELISHA PROMISES WATER AND VICTORY OVER MOAB. (2Ki. 3:6-24) King Jehoram . . . numbered Israel--made a levy from his own subjects, and at the same time sought an alliance with Jehoshaphat, which, as on the former occasion with Ahab, was readily promised (Kg1 22:4).
Commenting on 2 Kings 3:6-24