The only survivor of a shipwreck washed up on a small, uninhabited island. He prayed feverishly for God to rescue him, and every day he scanned the horizon for help, but none seemed forthcoming. Exhausted, he eventually managed to build a little hut out of driftwood to protect him from the elements, and to store his few possessions.
Then one day, after scavenging for food, he arrived home to find his little hut in flames, the smoke rolling up to the sky. The worst had happened--everything was lost. The man was stung with grief and anger. He shook a fist at heaven and cried, "God, how could you do this to me?!"
Early the next day, however, he was awakened by the sound of a ship approaching the island. It had come to rescue him. "How did you know I was here?" asked the weary man of his rescuers.
"We saw your smoke signal," they replied.