1 Kings 18:36-39

36When it was time for the evening offering, Elijah the prophet approached the altar and prayed: “O Lord God of Abraham, Isaac, and Israel, prove today that you are God in Israel and that I am your servant and have done all these things at your command.

37Answer me, O Lord, answer me, so these people will know that you, O Lord, are the true God and that you are winning back their allegiance.”

38Then fire from the Lord fell from the sky. It consumed the offering, the wood, the stones, and the dirt, and licked up the water in the trench.

39When all the people saw this, they threw themselves down with their faces to the ground and said, “The Lord is the true God! The Lord is the true God!”