Speaking in tongues? Divine healing? Gifts of the Spirit? Some believe these topics to be outdated, weird, or residing only in the imaginations of overly religious people. Today, there are more than 600 million adherents to Pentecostalism, a worldwide movement within Christianity. What are we to make of these topics? Few are better qualified to discuss these issues than Emeritus Historian, Dr. Grant Wacker, who is an award winning author, expert on the history of Christianity in general, and evangelicalism and Pentecostalism in particular. Grant Wacker grew up in a Pentecostal home before graduating from Stanford and Harvard and going on to teach at the University of North Carolina at Chapel Hill and Duke University for nearly fifty years. In this episode, Todd von Helms asks Professor Wacker to discuss his religious upbringing and what he has learned about Pentecostalism over the past 75 years.