Is there a secret to ministry effectiveness? You have probably been there: you open up your email and are bombarded with a half-dozen emails inviting you to check out the latest and greatest ministry strategies: "10 ways to grow your church," or "Seven ways to maximize your ministry effectiveness." At times, all the new strategies can become overwhelming. But what if the key to faithful ministry is not found in a new strategy, but instead a very old one? What if the key to ministry effectiveness is not found in cracking a secret ministry code, but in doing what local churches have done for the past 2,000 years? What if the secret really is not a secret at all? In They Devoted Themselves, Kyle Bueermann explores Acts 2:42-47, and examines six key elements that led the gospel to expand from 120 people gathered in a room in Jerusalem to tens of thousands of believers scattered throughout the known world over the course of 30 years.