Book excerpt: Most books on spiritual formation focus on the individual. But spiritual formation is at the heart of the church's whole purpose for existence. It must be a central task for the church to carry out Christ's mission in the world. This book offers an introduction to spiritual formation set squarely in the local church. The first edition has been well received and widely used as a textbook. The second edition has been updated throughout, incorporates findings from positive psychology, and reflects an Augustinian formation perspective. Foreword by Dallas Willard.