2 Kings 1:12-14

12 And Elijah in answer said, If I am a man of God, may fire come down from heaven on you and on your fifty men, and put an end to you. And the fire of God came down from heaven, and put an end to him and his fifty men.

13 Then he sent a third captain of fifty with his fifty men; and the third captain of fifty went up, and falling on his knees before Elijah, requesting mercy of him, said, O man of God, let my life and the life of these your fifty servants be of value to you.

14 For fire came down from heaven and put an end to the first two captains of fifty and their fifties; but now let my life be of value in your eyes.