We are beginning our expositional study in the book of Ephesians. Before we dive into the book itself, it is important that we understand the context for why Paul wrote Ephesians and gain an overview of the book as a whole. In this introductory lesson, we walk through Paul's missionary journeys showing why Ephesus was such a strategic location for ministry and then take a cursory view of Paul's letter to the church in Ephesus.