1 Kings 22:6, 13

So 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.”

Meanwhile, the messenger who went to get Micaiah said to him, “Look, all the prophets are promising victory for the king. Be sure that you agree with them and promise success.”