Pentecost

Pentecost, also known as Whit Sunday, Whitsunday, or Whitsun, is a Christian observance occurring 49 days after Easter (or 50 days if counting inclusively). The holiday recalls the event described in Acts 2:1–31, when the Holy Spirit descended on the Apostles, Mary, and other followers of Jesus while they were in Jerusalem observing the Feast of Weeks. This occasion is often referred to as the "Birthday of the Church."

Western churches

Within Christianity, Pentecost holds varying degrees of importance: it is a Great Feast in the Eastern Orthodox Church, a Solemnity in the Catholic Church’s Roman Rite, a Festival in Lutheran Churches, and a Principal Feast in the Anglican Communion. Many denominations have a special liturgy for the day. Because its date depends on Easter, Pentecost is a moveable feast. The following Monday is a legal holiday in numerous European, African, and Caribbean countries.

Etymology

The word "Pentecost" comes from the Greek term used in the Septuagint—the ancient Greek translation of the Hebrew Bible—to refer to the Jewish festival of Shavuot, one of the Three Pilgrimage Festivals. Shavuot is celebrated on the fiftieth day after Passover, as described in Deuteronomy 16:10 and Exodus 34:22, where it is called the "Festival of Weeks." The Septuagint uses the term in this sense in the Book of Tobit and 2 Maccabees. The translators also applied the word to the Year of Jubilee (Leviticus 25:10), which occurs every 50th year, and as an ordinal number in chronological passages. Hellenistic Jewish writers like Philo of Alexandria and Josephus likewise used "Pentecost" for Shavuot.

Background

In Judaism, Shavuot was originally a harvest festival, observed seven weeks and one day after the first day of Passover (Deuteronomy 16:9) or after the Sabbath (Leviticus 23:16). The Mishnah and Babylonian Talmud (tractate Arakhin) discuss it. The explicit mention of fifty days comes from Leviticus 23:16. The festival is also called the Feast of Harvest (Exodus 23:16) and the Day of First Fruits (Numbers 28:26).

In Exodus 34:22, it is referred to as the "first fruits of the wheat harvest." During the Hellenistic period, it became a day for renewing the Noahic covenant (Genesis 9:17), established between God and all living creatures. After the Temple’s destruction in 70 CE, offerings could no longer be brought there, so the festival’s focus shifted from agriculture to the Israelites receiving the Torah. By that time, many Jews lived in the Diaspora, and Acts 2 notes that Jews from "every nation under heaven" were in Jerusalem, possibly as pilgrims for Pentecost.

New Testament

The New Testament account in Acts 2 contains references to earlier biblical stories, including the Tower of Babel, the flood, and creation narratives from Genesis, as well as theophanies like God’s appearance on Mount Sinai when the Ten Commandments were given. Theologian Stephen Wilson describes the narrative as "exceptionally obscure," and scholars disagree on several points. No literary evidence confirms the location of the "house" mentioned in Acts 2:2. Some think it could be the "upper room" from Acts 1:13, but there is no textual proof, and the matter remains debated.

The events of Acts 2 take place during the Pentecost celebration in Jerusalem. The author notes that the disciples were "all together in one place" on the "day of Pentecost" (Acts 2:1). The verb used for the day’s arrival implies fulfillment.

A "mighty rushing wind" appears (wind being a common symbol for the Holy Spirit), along with "tongues as of fire." The disciples were "filled with the Holy Spirit, and began to speak in other tongues as the Spirit gave them utterance." Some scholars interpret this as speaking in multiple human languages, while others see it as ecstatic speech. In Christian tradition, this event fulfills Christ’s promise to baptize his followers with the Holy Spirit. Among the four gospels, only Matthew and Luke distinguish between baptism by water and baptism by Christ with "Holy Spirit and fire."

The narrative echoes Jesus’s baptism in the Jordan River and the start of his ministry by linking John the Baptist’s prophecy to the disciples’ baptism with the Holy Spirit on Pentecost. The timing during the law-giving festival of Pentecost symbolizes continuity with the giving of the law, but also the central role of the Holy Spirit for the early church. Christ’s central role marked a fundamental theological separation from traditional Jewish faith, which was grounded in the Torah and Mosaic Law. Peter’s sermon in Acts 2 emphasizes the resurrection and exaltation, quoting Joel 2:28–32 and Psalm 16.