Pentecost Church Resources are available online at SArmy Meeting Resources
Pentecost (Ancient Greek: Πεντηκοστή [ἡμέρα], Pentēkostē [hēmera], "the fiftieth [day]") is the Greek name for the Feast of Weeks, a prominent feast in the calendar of ancient Israel celebrating the giving of the Law on Sinai. This feast is still celebrated in Judaism as Shavuot. Later, in the Christian liturgical year, it became a feast commemorating the descent of the Holy Spirit upon the Apostles and other followers of Jesus Christ (120 in all), as described in the Acts of the Apostles 2:1–31. For this reason, Pentecost is sometimes described by some Christians today as the "Birthday of the Church".
In the Eastern church, Pentecost can also refer to the whole fifty (50) days between Easter and Pentecost, hence the book containing the liturgical texts for Paschaltide is called the Pentecostarion. ] Pentecost falls on the tenth day after Ascension Thursday (which falls 40 days after Easter).
The Pentecostal movement of Christianity derives its name from the New Testament event.