1 Kings 18:19

18:19 Now send out messengers and assemble all Israel before me at Mount Carmel, as well as the 450 prophets of Baal and 400 prophets of Asherah whom Jezebel supports.

1 Kings 18:26-28

18:26 So they took a bull, as he had suggested, and prepared it. They invoked the name of Baal from morning until noon, saying, “Baal, answer us.” But there was no sound and no answer. They jumped around on the altar they had made. 18:27 At noon Elijah mocked them, “Yell louder! After all, he is a god; he may be deep in thought, or perhaps he stepped out for a moment or has taken a trip. Perhaps he is sleeping and needs to be awakened.” 18:28 So they yelled louder and, in accordance with their prescribed ritual, mutilated themselves with swords and spears until their bodies were covered with blood.