For 10 points, name this festival celebrated fifty days after Easter.
The event celebrated in this holiday fulfilled the prophecy made in Joel 2:28-29. On this holiday, churchgoers wear red clothing, and roses are sometimes scattered from the ceiling. Celebrated on Whitsunday, this holiday commemorates an event in which 3,000 people were baptized after tongues of (*) flame appeared over the apostles' heads, allowing them to speak in tongues. For 10 points, name this festival celebrated fifty days after Easter.
The event celebrated in this holiday fulfilled the prophecy made in Joel 2:28-29.
Pentecost