As a result of Peter’s first sermon on the Feast of Weeks or Pentecost, as it is called in the Greek, three thousand souls came to believe in Jesus and came under his authority. They repented of their rebellion against God (an inward expression) and submitted to baptism (an outward expression or testimony) to the new life they were given by Jesus through the Holy Spirit. Peter concluded that the promise of new life was offered first to the Jews, but also to those who are afar off (Acts 2:39). That is, the new life of the Spirit was to include both Jew and Gentile. How this would be brought about was probably not understood at this point in time, but in a few years it would come clear.
When Peter spoke of the perverse and corrupt generation he was referring to the very one that rejected Jesus as their Savior (Acts 2:40; cp. Mark 8:38; Luke 11:29), but it can be applied to any generation throughout history since that time. No generation of this world is close to God, and we all need to be saved from the generation in which we live. How is this done? We save ourselves by submitting to the authority of Jesus. This is done by believing that he was crucified, died and was buried, but that God had raised him from the dead and made him Lord or Judge of all. If we believe this, we can repent of our rebellion against God by submitting our lives to Jesus, and this is done publically through baptism through which we identify with him in his death and resurrection.
Three thousand people answered the call on that Pentecost day, but it didn’t end there. The rule of the Lord extended outward to wherever those three thousand souls called home. In other words the Kingdom of God and therefore the Lordship of Christ went out from Jerusalem to rest upon many cities throughout the known world. So it is today, as well, wherever believers are found, there the Kingdom of God is for the Lordship of Christ is extended that far across this globe. From these places men and women of God share in the poverty of others (Romans 15:26), in spreading the Gospel (Philippians 1:5), in the fruits of the Spirit of Christ (Philippians 2:1), in the sufferings of Christ (Philippians 3:10) and in the communal life of Christ (1John 1:3, 6-7).
Each one of us is welcome to share in the Lord’s body and blood at the same table, without discrimination (Acts 2: 42; 1Corinthians 10:16-17; Luke 24:30-31, 35), because in this act we preach the Lord’s death until he come (1Corinthians 11:26) and it is in this solemn celebration that we come to know him and recognize him in our lives and the lives of our brethren (cp. Luke 24:35).
As a result of Pentecost, we are a people of prayer in that we have become his Temple (1Corinthians 3:16), for the House of God is a House of prayer (Luke 19:46). Therefore, we are to pray without ceasing (Romans 12:12; Ephesians 6:18; Colossians 4:2), praying that the Gospel could be preached boldly and freely (2Thessalonians 3:1), praying for the health and safety of those preaching the Gospel (1Thessalonians 5:25), praying for one another’s health and walk with the Lord (James 5:14-16), and for those who guide the authority of Jesus over us (Hebrews 13:7, 17). Finally, we pray those in the world, all men, but especially those who have been given authority over us for our safety and our peace (1Timothy 2:1-3), letting all these, our requests, be known to God with thanksgiving in our hearts (Philippians 4:6).