And he went and sent to Jehoshaphat the king of Judah, saying, the king of Moab hath rebelled against me,.... 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, 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, 1 Kings 22:4.