Old Ahab had a choice. He chose instead to prison the Prophet of the Lord and heed the many voices of the prophets of Baal who all agreed with each other. Sometimes, the crowd is wrong and you are left to sand alone against the popular consesus.

Go on up to battle. You will prosper. Go up. No harm will come. All of us prophets agree together. You will prosper, Ahab. Sorry that poor old Miciah had to stand alone. Even he at first lied. He also told them exactly what the prophets of Baal had propesied. In the end, he told both Ahab and Jehosaphat the truth. He saw Ahabs ruin and destruction.