This rigorous study provides an essential analysis of the Eleventh Mandate within the Shepherd of Hermas. Reiling explores the theological and practical criteria used by the early church to evaluate prophetic claims. By examining the historical context and the specific warnings issued within the text, this work helps readers understand the tension between authentic spiritual guidance and false prophecy. This volume is an invaluable resource for scholars, students, and anyone interested in the development of ecclesiastical authority and the preservation of truth in the sub-apostolic age.