Acts of the Early Church: The Startup

How could a single founder and twelve first followers grow into the greatest force of faith, ultimately conquering the Roman Empire and becoming the modern-day global leader of spirituality? The Acts of the Apostles, a New Testament book, provides a historical account of the birth, growth, and spread of the early Christian Church after Jesus' resurrection and ascension. That explains what happened—but how did this “new religion” experience such explosive, hockey-stick growth, starting with just twelve men and expanding to over 2.6 billion followers today?