This study answers the question: Why join a church? By seeing the scriptural reasoning for becoming a church member, participants will also learn what it looks like to be a healthy member and how to serve well within their local congregation. A series of ten 6–7 week studies covering the nine distinctives of a healthy church as originally laid out in Nine Marks of a Healthy Church by Mark Dever. This series explores the biblical foundations of key aspects of the church, helping Christians to live out those realities as members of a local body. Conveniently packaged and accessibly written, the format of this series is guided, inductive discussion of Scripture passages and is ideal for use in Sunday school, church-wide studies, or small group contexts.