If you’ve been involved in church leadership over the last several decades, you’ve had to figure out how to establish a structure for small groups at your church. This book is a resource for those deliberations, focusing on seven qualities to look for in determining whether or not a small group is spiritually healthy. Mack notes that small groups are bad, good (status quo), or great (spiritually mature), and that if good groups don’t aim for greatness, they will eventually become unhealthy AND they are falling short of God’s mission for small groups. Overall, I found this book fairly similar to other small group resources I’ve read over the years, in that it highlights qualities common across most of the small group materials that exist: leaders must be spiritually healthy, groups need to branch out and witness, discipleship is key, etc. In addition to describing these seven qualities, the book includes questions for leaders and groups to process. A good resource for church leadership, but also nothing you haven’t seen described in other small group resources.