Pentecost (also called Whitsunday) is a major Christian holiday celebrated 50 days after Easter, commemorating the descent of the Holy Spirit upon the Apostles and other followers of Jesus, as described in the Acts of the Apostles (Acts 2:1–31).
Pentecost Marks the birth of the Christian Church and the start of its mission to spread the Gospel, Fulfills Jesus' promise to send the "Helper" (Holy Spirit) to guide believers.
