1 Kings 22:5-7

5Then Jehoshaphat added, “But first let’s find out what the Lord says.”

6So the king of Israel summoned the prophets, about 400 of them, and asked them, “Should I go to war against Ramoth-gilead, or should I hold back?” They all replied, “Yes, go right ahead! The Lord will give the king victory.”

7But Jehoshaphat asked, “Is there not also a prophet of the Lord here? We should ask him the same question.”