Pentecost, otherwise known as the Feast of Weeks (Exodus 34:22; Leviticus 23:15–22; Deuteronomy 16:9–12) or the Feast of Harvest (Exodus 23:16), was a Jewish festival which took place fifty days after the conclusion of the Feast of Unleavened Bread (Leviticus 23:4–8, Leviticus 23:15–16). It took place on a Sunday (the day after the Sabbath). The term Pentecost
comes from the Greek for fiftieth
and came to be used with reference to this feast.1 It was one of three pilgrimage festivals in Israel where all the men were expected to come to the city of Jerusalem (Exodus 34:23), together with a gift in proportion to what the Lord had given to them (Deuteronomy 16:16–17).
1 When the day of Pentecost arrived, they were all together in one place.