High Quality Content by WIKIPEDIA articles! Pentecostalism is a diverse and complex movement within Christianity that places special emphasis on a direct personal experience of God through the baptism in the Holy Spirit, has an eschatological focus, and is an experiential religion. The term Pentecostal is derived from Pentecost, the Greek name for the Jewish Feast of Weeks. For Christians, this event commemorates the descent of the Holy Spirit upon the followers of Jesus Christ, as described in the second chapter of the Book of Acts. Pentecostals tend to see their movement as reflecting the same kind of spiritual power and teachings that were found in the Apostolic Age of the early church. For this reason, some Pentecostals also use the term Apostolic or full gospel to describe their movement.