The first and most concise snapshot of New Testament church life is found in the familiar words of Acts 2:42-47:
42 They devoted themselves to the apostles' teaching and to the fellowship, to the breaking of bread and to prayer. 43 Everyone was filled with awe, and many wonders and miraculous signs were done by the apostles. 44 All the believers were together and had everything in common. 45 Selling their possessions and goods, they gave to anyone as he had need. 46 Every day they continued to meet together in the temple courts. They broke bread in their homes and ate together with glad and sincere hearts, 47 praising God and enjoying the favor of all the people. And the Lord added to their number daily those who were being saved.
In one sense this passage is clearly descriptive, showing how God worked at a precise time and in a distinct culture during the unfolding of his redemptive plan. Acts 2:1, 5, and 8-11 reveal how God-fearing Jews from all over the known world had converged on Jerusalem to celebrate Pentecost (called the Feast of Weeks—see Deut. 16:10—or Feast of Harvest—see Ex. 23:16)Suddenly a group of simple Galileans began supernaturally extolling the wonders of God in the various native languages of all these international pilgrims! As Peter boldly seized the moment and declared the good news that the crucified Jesus is the resurrected Messiah, (2:14-40) the hearts of these devout visitors were pierced. About 3,000 accepted Peter's message. They repented and were baptized (v. 41). Just like that, the Church was born.
Does it not make sense that these new converts would want to remain, at least for a time, in Jerusalem? They had just witnessed and experienced the jaw-dropping power of God. No wonder ...