1 Kings 18:36-37

36At 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.

37O 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.”