I’ve heard it said that this filling of the Holy Spirit at Pentecost is the reverse story of the Tower of Babel in Genesis 11. Man in rebellion had one language, but God confused their languages. Now those who speak many languages are called to follow Jesus, each in his own language by the power of the Holy Spirit.

And then Peter gets up to preach. Was this his first public sermon? If so, it’s a good start–short, sweet, and to the point: “Therefore, let all the house of Israel know assuredly that God has made this Jesus, whom you crucified, both Lord and Christ.” (vs.36)

And a bunch of people became believers and followers of Jesus in response to Peter’s sermon. When I looked up Pentecost, I read that the holiday was the same as the Feast of Weeks, or the Harvest Festival for the Jews (celebrated 50 days after the Sabbath of Passover Week). That’s why so many Jews from all over the Diaspora were in Jerusalem, for the Feast of Weeks. Therefore, Pentecost is the beginning of God’s Harvest of disciples following Jesus. “Those who accepted his message were baptized, and about three thousand were added to their number that day.”

What would you say is the focus of this chapter and of Peter’s sermon?