WHAT IS AN INFIDEL? This is a true story and the author, Rick Mathes, is a well-known Leader in prison ministry. The man who walks with God always gets to his destination. If you have a pulse you have a purpose. The Muslim religion is the fastest growing religion per capita in the United States , especially in the minority races!! Last month I attended my annual training session that's required for maintaining my state prison security clearance.. During the training session there was a presentation by three speakers representing the Roman Catholic, Protestant and Muslim faiths , who each explained their beliefs.