1 Kings 18:26-28

So they took the bull that was given to them and prepared it. They prayed to Baal from morning until noon, shouting “Baal, answer us!” But there was no sound, and no one answered. They danced around the altar they had built. At noon Elijah began to make fun of them. “Pray louder!” he said. “If Baal really is a god, maybe he is thinking, or busy, or traveling! Maybe he is sleeping so you will have to wake him!” The prophets prayed louder, cutting themselves with swords and spears until their blood flowed, which was the way they worshiped.