If you are reading this book, then you are probably serving as a missionary or preparing to serve. Though you probably are not aware of it, this makes you part of the Modern Missions Movement. William Carey, pastor of a tiny church in England, launched the Modern Missions Movement with the publication of his pamphlet "An Enquiry into the Obligations of Christians to Use Means for the Conversion of the Heathens" in 1792. He argued that Christians have a God-given responsibility to bring the gospel to the peoples of the world. In this book we aim to continue William Carey's work. In this book we show you how to develop strategies to reach the people groups of the world for Christ. To do this, we define strategy and explain the difference between strategy and methods. From there we sketch the development of missions strategy over two thousand years of church history. Finally, we explain how you can prayerfully develop a strategy that will take you from no believers to a vibrant cluster of churches. - Preface.