1 Kings 22:5-7

5Then Jehoshaphat said to the king of Israel, ‘Before we go to fight, we must ask the Lord what we should do.’

6So the king of Israel brought together about 400 prophets. He asked them, ‘Should I attack Ramoth Gilead, or not?’ They answered, ‘Yes, go and attack it, because the Lord God will give it to you, our king.’

7But Jehoshaphat then asked, ‘Is there any other prophet of the Lord that we could ask?’