1 Kings 18:34-39

After they had done this, he said, “Do the same thing again!” And when they were finished, he said, “Now do it a third time!” So they did as he said, and the water ran around the altar and even filled the trench. At the usual time for offering the evening sacrifice, Elijah the prophet walked up to the altar and prayed, “O LORD, God of Abraham, Isaac, and Jacob, prove today that you are God in Israel and that I am your servant. Prove that I have done all this at your command. O LORD, answer me! Answer me so these people will know that you, O LORD, are God and that you have brought them back to yourself.” Immediately the fire of the LORD flashed down from heaven and burned up the young bull, the wood, the stones, and the dust. It even licked up all the water in the trench! And when all the people saw it, they fell face down on the ground and cried out, “The LORD—he is God! Yes, the LORD is God!”