2 Chronicles 18:5-9

So the king of Israel assembled the prophets, four hundred men, and said to them, “Should we go to battle against Ramoth-gilead, or should I refrain?” And they said, “Go up, for God will hand it over to the king.”

But Jehoshaphat said, “Is there no longer a prophet of the Lord here, that we may inquire of him?”

And the king of Israel said to Jehoshaphat, “There is still one man by whom we may inquire of the Lord, but I hate him, for he never prophesies anything good regarding me, but always bad. He is Micaiah the son of Imlah.” But Jehoshaphat said, “May the king not say so.” Ahab’s False Prophets Assure Victory

Then the king of Israel summoned an officer and said, “Bring Micaiah son of Imlah quickly.”

Now the king of Israel and Jehoshaphat the king of Judah were sitting, each on his throne, dressed in their robes, and they were sitting at the threshing floor at the entrance of the gate of Samaria; and all the prophets were prophesying before them.