2 Chronicles 18:1-7

Now Jehoshaphat had riches and honor in abundance; and he joined affinity with Ahab. 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 were with him, and moved him to go up with him to Ramoth-gilead. And Ahab king of Israel said unto Jehoshaphat king of Judah, Wilt thou go with me to Ramoth-gilead? 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, Inquire first, I pray thee, for the word of Jehovah. Then the king of Israel gathered the prophets together, four hundred men, and said unto them, Shall we go to Ramoth-gilead to battle, or shall I forbear? And they said, Go up; for God will deliver it into the hand of the king. But Jehoshaphat said, Is there not here a prophet of Jehovah besides, that we may inquire of him? And the king of Israel said unto Jehoshaphat, There is yet one man by whom we may inquire of Jehovah: but I hate him; for he never prophesieth good concerning me, but always evil: the same is Micaiah the son of Imla. And Jehoshaphat said, Let not the king say so.