This book proposes a method of mystagogy based on the preaching of Ambrose of Milan. Chapter 1 establishes the need for mystagogy. chapter 2 lays out the historical context of Ambrose and his church. Chapters 3-8 are a series of six historical studies on Ambrose and his church that correspond to the components of a homiletic method. Chapter 9 proposes a method of mystagogy for the contemporary church based on Ambrose's preaching.