While those on whom the Spirit had descended were speaking in many languages, the Apostle Peterstood up with the eleven and proclaimed to the crowd that this event was the fulfillment of the prophecy of Joel : "... I will pour out my Spirit..."..
Verse 15
"The third hour of the day" : Peter explains that it is only breakfast time.
Verses 16–21
The extended quotation from is to support that this event is something predicted in Scripture, and it clarifies some points about the apostolic proclamation:
The ecstatic speech is to be identified with the biblical gift of prophecy, as the work of the same Spirit of God.
This is a phenomenon of 'the last days', but is a stage before the final 'day of the Lord'.
Verses 22–24
Peter then turns to the question, "Who was Jesus?", appealing to many people in the audience who had witnessed the miracles performed by Jesus, as a divine attestation of his ministry in the midst of his people. Jesus' death is the responsibility of three groups: 'the immediate agency' ; 'the proximate motive force' ; and behind both of those, 'the divine plan'.
"Loosening" : or having "destroyed or abolished"
"Pull of death" : also in the sense of "birth pangs"
Verses 32-36
Verses 34 and 35 quotes to conclude saying:
Verse 38
"Remission": or "forgiveness"
Acts 2:41 then reports that about 3000 people were baptized and added to the number of believers.
Verse 41
The fact that many understood in their native language, what the Spirit was saying demonstrates that the first miracle the Holy Spirit carried out was the translation of the Gospel. This message is one that is communicating "God's deeds of power." Such miracle carries the undertone that the gospel, would be for a diverse group that for a long time had been divided. "Whereas in Babel humanity was divided by different tongues, in Pentecost that division was overcome."
Location of the First Pentecost
Traditional interpretation holds that the Descent of the Holy Spirit took place in the Upper Room, or Cenacle, on the day of Pentecost. The Upper Room was first mentioned in Luke 22:12–13. This Upper Room was to be the location of the Last Supper and the institution of Holy Communion. The other mention of an "upper room" is in Acts 1:13–14, the continuation of the Luke narrative, authored by the same biblical writer. Here the disciples and women waited and they gave themselves up to constant prayer, until the arrival of the "wind" mentioned above.
A description of the first Church (2:44–47)
contains a description of the earliest church, giving a practical view of how the church members acted. The verses cover several aspects of life:
The believers had everything in common
They sold property and possessions so as to give to anyone who was in need
