What does 2 Chronicles 18:5 mean?

So Ahab gathered about four hundred prophets and asked them, 'Should we go to war against Ramoth-gilead, or not?' They all said, 'Go ahead. God will hand it over to you.' 2 Chronicles 18:5 - Modern Text Bible

(Ahab’s prophets unanimously encouraged the attack, but their message may not have been truly from God.)