What is penetacost?

Answer 1

It is a name used in the Christian Greek Scriptures to denote the Festival of Harvest (Ex 23:16) or Festival of Weeks (Exodus 34:22). It is also called “the day of the first ripe fruits.” (Nu 28:26) Instructions for this festival are found at Leviticus 23:15-21; Numbers 28:26-31; Deuteronomy 16:9-12. It was to be celebrated on the 50th day (Pentecost means “Fiftieth [Day]”) from Nisan 16, the day that the barley sheaf was offered. (Leviticus 23:15, 16) In the Jewish calendar it falls on Sivan 6. It was after the barley harvest and the beginning of the harvest of wheat, which ripened later than the barley.​—Exodus 9:31, 32.

(New World Translation of the Holy Scriptures)

Answer 2

Pentecost is a significant Christian holiday celebrated on the 50th day after Easter, commemorating the descent of the Holy Spirit upon the apostles. This event, described in the Book of Acts, marks the birth of the Christian Church and is often considered the fulfillment of Jesus' promise to send the Holy Spirit. Pentecost is celebrated with various traditions, including church services, prayers, and the use of symbols like flames and doves to represent the Holy Spirit. In some cultures, it is also associated with harvest festivals.