The devil for a slave

Three men were on a ship, an atheist, a rich man and a christian. Suddenly the Devil appeared and said, “Drop anything in the sea; if I find it I will eat you, If I can’t, I will be your slave!”

The atheist dropped a pin; the Devil found it and ate him. The rich man dropped a coin; the Devil found it and ate him too. The Christian opened a bottle of water, poured it in the sea and said: “Go on……”