Conversion is at the core of Christian experience. Is it a process? Or can conversion be confined to a point in time? In our tolerance-driven, globalized world, should we even use the word at all? Social, political, and theological challenges push us to think again about this vital theme. Drawing on twenty-five years of mission experience, David Greenlee blends anthropological insights with evangelical theology to provide helpful missiological insights on conversion. He thoroughly illustrates the issue with cases and stories from South Asia where anti-conversion sentiment runs high, the Islamic world where the Law of Apostasy challenges any who would turn to Christ, and Europe where traditional religion and post-modern "tolerance" both confront any suggestion of conversion.