The next class in the University of Experience which Sunday entered was that of professional evangelistic work, in association with Rev. J. Wilbur Chapman, D.D., the well-known Presbyterian evangelist. This invitation came after three years of service in the Chicago Y. M. C. A. Not yet to platform speaking as his chief task was Sunday called. Far from it. He was a sort of general roustabout for the evangelist. His duties were multifarious. He was advance agent, going ahead to arrange meetings, to organize choirs, to help the local committee of arrangements with its advertising or other preparations, and, in general, tying up all loose ends. When tents were used he would help erect them with his own hands; the fists that so sturdily beat pulpits today, have often driven home tent pegs. Sunday sold the evangelist's song books and sermons at the meetings; helped take up the collection, and, when need arose, spoke from the platform. The persons who wonder at the amazing efficiency for organization displayed by Sunday overlook this unique apprenticeship to a distinguished evangelist. He is a "practical man" in every aspect of evangelistic campaigns, from organizing a local committee and building the auditorium, to handling and training the converts who come forward. The providence of all this is clear in retrospect: but as for Sunday himself, he was being led by a way that he knew not. CHAPTER VI A Shut Door--and an Open One Faith is the beginning of something of which you can't see the end but in which you believe.--BILLY SUNDAY. Destiny's door turns on small hinges. Almost everybody can say out of his own experience, "If I had done this, instead of that, the whole course of my life would have been changed." At many points in the career of William A. Sunday we see what intrinsically small and unrelated incidents determined his future course in life. If he had not been sitting on that Chicago curbstone one evening, and if the Pacific Garden Mission workers had failed on that one occasion alone to go forth into the highways, Billy Sunday might have been only one of the multitude of forgotten baseball players. If he had not gone to prayer-meeting in his new church home he would not have met the wife who has been so largely a determining factor in his work. If he had not joined the Y. M. C. A. forces in Chicago he would not have become Peter Bilhorn's friend and so Dr. Chapman's assistant.