The biblical festival called Pentecost in the New Testament is coming up soon, taking place on June 16 this year. The word Pentecost comes from the Greek word meaning fiftieth, since it is observed after counting 50 days, beginning with the day of the wave sheaf offering during the Days of Unleavened Bread (Leviticus 23:15–17). Pentecost describes the festival usually called the Feast of Weeks in the Old Testament (Exodus 34:22; Deuteronomy 16:9–10, 16), but is also referred to as the Feast of Harvest (Exodus 23:16) and “the day of the firstfruits” (Numbers 28:26). The New Testament directly refers to Pentecost three times (Acts 2:1–4; 20:16; 1 Corinthians 16:8). - Full text here: https://www.tomorrowsworld.org/commentary/should-i-keep-pentecost