From Kook Science
A Protestant tendency, originating in part from the nineteenth-century Holiness Movement, that places special emphasis on new birth (spiritual rebirth, being born again), perfection (teleiosis), and baptism with the Holy Spirit, the endowment of the believer with charismata (spiritual gifts), manifesting as the powers of faith healing through laying on of hands and glossolalia (speaking in tongues). The name is taken from the Pentecost (Greek: Πεντηκοστή, pentēkostē, "fiftieth"), the seventh Sunday following Easter (Pascha), being fifty days after the Resurrection of Jesus Christ, when the Holy Spirit descended upon the Apostles and fellow Christians at Jerusalem during the Feast of Weeks, as detailed in the fifth book of the New Testament, the Acts of the Apostles (Acts 2:1-31).
- Samarin, William J. (1972), Tongues of Men and Angels: The Religious Language of Pentecostalism, New York: Macmillan Co.