1 Kings 18:18-21

18And he answered, I have not troubled Israel; but thou, and thy father’s house, in that ye have forsaken the commandments of the LORD, and thou hast followed Baalim. 19Now therefore send, and gather to me all Israel to mount Carmel, and the prophets of Baal four hundred and fifty, and the prophets of the groves four hundred, who eat at Jezebel’s table. 20So Ahab sent to all the children of Israel, and gathered the prophets together to mount Carmel.

21And Elijah came to all the people, and said, How long halt ye between two opinions? if the LORD is God, follow him: but if Baal, then follow him. And the people answered him not a word.1