The rise of Pentecostalism is one of the most important changes in Christianity in the past century. Growing rapidly, it has expanded throughout the world. How many Pentecostals are there in the world? How did Pentecostalism grow so fast? What do Pentecostals believe? What role did revivals play like the Azusa Street Revival in the USA or the Mukti Mission Revival in India? What do Pentecostals experience when they speak in tongues, pray for healing, and seek prosperity? Brill's Encyclopedia of Global Pentecostalism answers such questions, drawing upon disciplines such as anthropology, biblical studies, economics, gender studies, history, theology, and other areas of related interest.