2 Chronicles 18:7
And the king of Israel said unto Jehoshaphat, There is yet one man, by whom we may enquire of the LORD: but I hate him; for he never prophesied good unto me, but always evil: the same is Micaiah the son of Imla. And Jehoshaphat said, Let not the king say so.
Ahab hated Micaiah because the prophet never announced good for him but always announced evil and judgment, wanting instead a favorable message that suited his wishes, which exposes a settled resistance to unwelcome truth. That admission set Micaiah apart as the lone contrast to the four hundred prophets who were urging Ahab to go up to battle. Jehoshaphat objected to Ahab's dismissive way of speaking and insisted that the Lord's prophet be called and heard. Micaiah then warned that Israel would be left scattered, and that warning was confirmed when Ahab died in the battle he had been urged to enter.