The Man Who Could Work Miracles by H.G. Wells, available from,
The University of Adelaide Library.
After George McWhirter Fotheringay discovers that he is able to perform miracles in a local bar after he professes not to believe in them, he experiments in his home with whimsical results. He seeks the advice of local clergyman, Mr. Maydig, who decides to begin a campaign of using Fotheringay's powers to reform the world. But even with best of intentions, Mr. Fotheringay has little knowledge and less foresight. Before long a miracle backfires and he must use his power one last time to undo the cataclysm.