2 Chronicles 18:5-7

So King Ahab called four hundred prophets together and asked them, “Should we go to war against Ramoth in Gilead or not?” They answered, “Go, because God will hand them over to you.” But Jehoshaphat asked, “Isn’t there a prophet of the LORD here? Let’s ask him what we should do.” Then King Ahab said to Jehoshaphat, “There is one other prophet. We could ask the LORD through him, but I hate him. He never prophesies anything good about me, but always something bad. He is Micaiah son of Imlah.” Jehoshaphat said, “King Ahab, you shouldn’t say that!”