Elijah
So Obadiah went to meet Ahab and told him, and Ahab went to meet Elijah. They argued, and Elijah told Ahab to "summon the people from all over Israel" to meet him on the Mount Carmel, and to "bring the four hundred and fifty prophets of Baal and the four hundred prophets of Asherah, who eat at Jezebel's table". And surprisingly, Ahab obeyed him.