Pentecost was a Jewish festival that happened during the Feast of First Fruits. Happening 50 days after Passover, which celebrated Israel's deliverance from Egypt, Pentecost was a time to celebrate the initial harvest feast. Israel gathered together to offer the Lord two loaves of wheat bread made from firstfruits of the grain. In Acts 2, the Holy Spirit comes to the apostles to fulfill Jesus's words that they would receive power from the Holy Spirit to glorify God's name to all nations. As a result, we, the church and body of Christ, are called to bear witness to all nations through the power of the Holy Spirit to glorify the name of God!