2 Kings 1:10-14

10But Elijah answered the captain of fifty, "If I am a man of God, let fire come down from heaven and consume you and your fifty." Then fire came down from heaven and consumed him and his fifty.

11Again the king sent to him another captain of fifty men with his fifty. And he answered and said to him, "O man of God, this is the king's order, 'Come down quickly!'"

12But Elijah answered them, "If I am a man of God, let fire come down from heaven and consume you and your fifty." Then the fire of God came down from heaven and consumed him and his fifty.

13Again the king sent the captain of a third fifty with his fifty. And the third captain of fifty went up and came and fell on his knees before Elijah and entreated him, "O man of God, please let my life, and the life of these fifty servants of yours, be precious in your sight.

14Behold, fire came down from heaven and consumed the two former captains of fifty men with their fifties, but now let my life be precious in your sight."