Lesson 2 — Acts 2: When the Spirit Came

"And they were all filled with the Holy Spirit and began to speak in other tongues as the Spirit gave them utterance." — Acts 2:4

All together in one place

Verse 1: "When the day of Pentecost arrived, they were all together in one place."

Pentecost was already an existing Jewish festival — fifty days after Passover, the feast of weeks, celebrating the giving of the Law at Sinai. Jews from every nation under heaven were gathered in Jerusalem.

The timing is not accidental. As Sinai was the birth of Israel as a nation under the Law, Pentecost is the birth of the church as a people under the Spirit. The same God who gave the Law on stone is now writing it on hearts.

And notice: all together in one place. The Spirit comes upon a body, not isolated individuals. He is given to a praying, waiting community. We cannot bypass community and expect Pentecost.

Wind, fire, and tongues

Three signs accompany the Spirit's coming.

Wind (v. 2). The same Hebrew word — ruach — means wind, breath, and Spirit. The breath that hovered over the waters in Genesis 1. The breath Jesus breathed on His disciples in John 20. The breath that fills the bones in Ezekiel 37. This is the breath of new creation, blowing through the upper room.

Fire (v. 3). Throughout Scripture, fire marks the presence of God — the burning bush, the pillar by night, the altar consumed. Now the fire rests not on a tabernacle of cloth, but on people. Each person becomes a tabernacle.

Tongues (v. 4). They begin to speak in other languages. This is the most striking sign of all.

Pentecost and Babel

To understand Acts 2, look back to Genesis 11. At Babel, humanity gathered in pride to make a name for themselves. God scattered them by confusing their language. From that moment, every human attempt to gather under one banner has run into the wall of language.

At Pentecost, God reverses Babel. He does not erase the languages. He fills His church with the power to cross them. Galileans speak Parthian, Median, Egyptian, Arabic. "How is it that we hear, each of us in his own native language?" (v. 8).

The gospel does not require people to learn the language of empire. The gospel comes to people in their own tongue. This is the theological root of every Bible translation project, every village pastor preaching in his own language, every Kinyarwanda hymn, every Kiswahili sermon, every Luganda Bible study. The Spirit honours the mother tongue.

Peter's sermon

When Peter stands to preach (v. 14-36), notice what he does. He does not start with a moral appeal. He does not start with a strategy. He goes straight to Scripture.

He quotes Joel 2 — "In the last days... I will pour out my Spirit on all flesh" — and announces: this is that. What you are seeing now is what the prophet promised.

He preaches Christ — His life, His death by their hands, His resurrection, His exaltation. He ends with one sharp claim: "Let all the house of Israel therefore know for certain that God has made him both Lord and Christ, this Jesus whom you crucified" (v. 36).

A few observations on Peter's preaching:

He preaches the Scriptures. Not his ideas. The Word.
He preaches Christ. Not principles. A Person.
He preaches with directness. "This Jesus whom you crucified." He does not soften the call.

The response

"When they heard this they were cut to the heart" (v. 37). The Spirit takes Peter's words and pierces them. Three thousand are baptised that day.

Look at verses 42-47 — the portrait of this new community. They devote themselves to:

The apostles' teaching (the Word)
Fellowship (one another)
The breaking of bread (the Lord's table)
The prayers (communion with God)

And the Lord adds to their number daily.

This is the DNA of the church. Not a programme. Not a building. Four practices, simple enough for any village to live, deep enough to carry the gospel for two thousand years.

A word to the East African church

The house-group movement we are seeing across East Africa is not a strategy we invented. It is a return to Acts 2:42-47. Small, simple, devoted to the Word and to one another, meeting house to house, breaking bread, praying.

If your church is small — you are not behind. You are biblical.

Reflection questions

Have you ever waited, with the church, for the Spirit's power before launching a work?
In what languages should the gospel be ringing out from your house?
Which of the four practices of Acts 2:42 is weakest in your community right now?

Prayer

Holy Spirit, come again. Not a quiet whisper, but wind and fire. Loose our tongues. Pierce our hearts. Build a people like the one You built in Jerusalem — devoted, joyful, multiplying. In Jesus' name, amen.

Next lesson: Acts 3 — The Name and the Lame Man.

Text-only version