2 Chronicles 18:1

And after certain years he went down to Ahab to Samaria. And Ahab killed sheep and oxen for him in abundance, and for the people that he had with him, and persuaded him to go up with him to Ramothgilead.

And Ahab king of Israel said unto Jehoshaphat king of Judah, Wilt thou go with me to Ramothgilead? And he answered him, I am as thou art, and my people as thy people; and we will be with thee in the war.

And Jehoshaphat said unto the king of Israel, Enquire, I pray thee, at the word of the LORD to day.

Therefore the king of Israel gathered together of prophets four hundred men, and said unto them, Shall we go to Ramothgilead to battle, or shall I forbear? And they said, Go up; for God will deliver it into the king’s hand.