During the first half of the twentieth century, George Jeffreys (1889-1962) was one of the world's leading Pentecostal ministers. He regularly hired London's Royal Albert Hall and filled it to capacity, and he did the same in the other great venues in major cities with the extraordinary result that congregations which still exist today were formed from his numerous converts. He founded two denominations, Elim Pentecostal Church and The Bible Pattern Church. Converted during the Welsh Revival, he saw Holy Spirit revival as the answer to every spiritual, social, and political problem, and in his mesmeric addresses to huge audiences he stressed the supernatural nature of Christianity. Yet, the last parts of his life were blighted by a heart-rending struggle against the denomination he had founded and principles he had first taught. This book, the first full-length account of Jeffreys' life and ministry, places him against the background of the two World Wars, the modernisation of London, and turbulent events in Israel and fascist Europe.