INTRODUCTION: In order to properly celebrate Jesus’ Resurrection, the central feast of Christianity, the Church sets aside 50 days of joyful celebration. These 50 days from Easter to Pentecost are celebrated as one feast day, sometimes called “the great Sunday.” So Easter does not end on Easter Sunday! During this joyous 50 day season, we celebrate the Feast of the Ascension, when Jesus returned to his Father in Heaven, and Pentecost, when the Holy Spirit came to be with the Apostles. The Holy Spirit came like tongues of fire and a mighty rushing wind to fire up the Apostles and push them out to share the Good News. Pentecost is sometimes called the birthday of the Church.