2 Kings 3:7

“And he went and sent to Jehoshaphat the king of Judah, saying, the king of Moab hath rebelled against me, etc.] By refusing to pay him tribute: wilt thou go up with me against Moab to battle? and he said, I will go up; which he agreed to, partly to encourage in the reformation of religion which he had begun, and partly to chastise the Moabites for their invasion of his country, (<142001>2 Chronicles 20:1). I am as thou art, my people as thy people, and my horses as thy horses; the same answer he returned to Ahab, (see Gill on “<112204>1 Kings 22:4”).”

“The close alliance between the two kingdoms still subsisted. Jehoram therefore sends confidently to make the same request with respect to Moab that his father had made two years before with respect to Syria (marginal reference). Jehoshaphat consented at once, notwithstanding that his former compliance had drawn upon him the rebuke of a prophet 2 Chronicles 19:2. Perhaps Jehoram’s removal of the Baal-worship 2 Kings 3:2 weighed with him. He had himself been attacked by the Moabites in the preceding year; and though the attempt had failed, Jehoshaphat would feel that it might be renewed, and that it was important to seize the opportunity of weakening his enemy which now offered itself. return…”

“He said - He joins with him in this war; because the war was just in itself, and convenient for Jehoshaphat, both in the general, that revolters should be chastised: lest the examples should pass into his dominions, and the Edomites be encouraged to revolt from him, as they did from his son; and in particular, that the Moabites should be humbled, who had invaded his land before this time, Ch2 20:1, and might do so again if they were not brought low; for which a fair opportunity now offered. 4 Kings (2 Kings) 3:9”

“wilt thou go: Kg1 22:4, Kg1 22:32, Kg1 22:33; Ch2 18:3, Ch2 18:29-32, Ch2 19:2, Ch2 21:4-7, Ch2 22:3, Ch2 22:4, Ch2 22:10-12 4 Kings (2 Kings) 3:8”