The Contest on Mount Carmel
Elijah challenged the 450 prophets of Baal, each side building an altar and laying a sacrifice without setting it alight, to see whose god would send fire to consume the offering. The prophets of Baal cried out and cut themselves from morning to evening with no response; after Elijah prayed, fire fell from heaven and consumed the offering, the wood, the stones, and even the water in the trench around the altar, and the people fell down crying, "the Lord, he is God!"