This book focuses on Free Church pastors in Germany and their perceptions of spirit possession and mental illness. To explore Free Church pastors’ understanding of spirit possession and mental illness is critical in light of the overlap of symptoms. Misdiagnosis may result in a client receiving treatment that may not be appropriate. Interviews with Free Church pastors were conducted. The results were analysed and four themes were identified. Based on these interviews conclusions could be drawn which ultimately made it clear that the German free church pastors’ theological training needs to be supplemented in the area of psychology and that the pastors are unable to cope in the area of «spirit possession or mental illness».