1 Kings 22:5-7

5But Jehoshaphat said to the king of Israel, “First, please ask what the Lord’s will is.”

6So the king of Israel gathered the prophets, about four hundred men, and asked them, “Should I go against Ramoth-gilead for war or should I refrain?” They replied, “March up, and the Lord will hand it over to the king.”

7But Jehoshaphat asked, “Isn’t there a prophet of the Lord here anymore? Let’s ask him.”