I Kings 22:3-4, 6

And the king of Israel said to his servants, “Do you know that Ramoth in Gilead is ours, but we hesitate to take it out of the hand of the king of Syria?” So he said to Jehoshaphat, “Will you go with me to fight at Ramoth Gilead?” Jehoshaphat said to the king of Israel, “I am as you are, my people as your people, my horses as your horses.”

Then the king of Israel gathered the prophets together, about four hundred men, and said to them, “Shall I go against Ramoth Gilead to fight, or shall I refrain?” So they said, “Go up, for the Lord will deliver it into the hand of the king.”