While speaking in tongues is a cherished experience for many Pentecostals, it is not the entirety of the meaning of being a Pentecostal - not experientially - not biblically. To be a Pentecostal is so much more. The definition has become too narrow. What it means to be a Pentecostal needs to be re-examined and then redefined by both non-Pentecostals and Pentecostal alike. The Purpose of this book is to take a fresh look at what the Bible intends to be the meaning of Pentecost, and thereby Pentecostal. What are the roots of the word? What are the foreshadowing experiences that give breadth and depth to the concept? What are the implications of those experiences? How has the Bible explained the life and purpose of those who receive the baptism in the Holy Spirit? As an example, many Pentecostals know that the Old Testament feast of Pentecost was a harvest feast, but have never asked why it is celebrated in the spring. Or, if God's presence descending on Mt. Sinai was 50 days after the first Passover, was that intentional? And if it was intentional, what does that mean? These questions and others are explored in this book.