2 Chronicles 18:3-7

Ahab king of Israel said to Jehoshaphat king of Judah, “Will you go with me against Ramoth-gilead?” And he said to him, “I am as you are, and my people as your people, and we will be with you in the battle.” Moreover, Jehoshaphat said to the king of Israel, “Please inquire first for the word of the LORD.” Then the king of Israel assembled the prophets, four hundred men, and said to them, “Shall we go against Ramoth-gilead to battle, or shall I refrain?” And they said, “Go up, for God will give it into the hand of the king.” But Jehoshaphat said, “Is there not yet a prophet of the LORD here that we may inquire of him?” The king of Israel said to Jehoshaphat, “There is yet one man by whom we may inquire of the LORD, but I hate him, for he never prophesies good concerning me but always evil. He is Micaiah, son of Imla.” But Jehoshaphat said, “Let not the king say so.”