For some people “Pentecostal” is a new word. Although it has become much more common in recent years, its roots go back to an ancient Jewish feast and, more recently, to the first outpouring of the Holy Spirit on the earliest Christian believers. Because this initial outpouring of the Spirit took place on the Day of Pentecost, those who experience a similar infilling of the Spirit are known as Pentecostals. They look to the book of Acts as a guide for how to live out their Christian faith. Many of the key players in Acts were eyewitnesses of the life and teachings of Jesus, and it follows that they would have the clearest insight into the way in which to worship Jesus. Take a few moments of your time and learn what it means to be Pentecostal.