2 Kings 3:8

He said; either Jehoshaphat; or rather, Jehoram; for the following answer may seem to be Jehoshaphat s. Through the wilderness of Edom; which though it was much the longer way, yet they thought it best; partly to secure the king or viceroy of Edom, of whom they might have some suspicion, from that passage, 2 Chronicles 20:22, and to carry both him and his soldiers along with them into the war, both to get their assistance, and to prevent them from, making a war of diversion against Judah, whilst Jehoshaphat was engaged against Moab; and partly that they might invade Moab on their weakest side, and where they least expected them. God also thus disposed their hearts to make way for the following miracle.