c. 30 AD (the day of Pentecost)
Pentecost – the birth of the church in Jerusalem and the structure of the apostolic community
The Holy Spirit descended on the apostles, and they began to speak in other tongues. Peter preached to the pilgrims gathered in Jerusalem. He declared that Jesus, crucified by the Jews, had been raised and made Lord and Christ. He called on them to repent and be baptized for the forgiveness of sins.
About three thousand people believed and were baptized. Their number soon grew to five thousand. Most historians date the history of the church from this very event.
In the following decades of the first century the apostolic church developed general and local ministries. The general ministries were apostles, prophets, teachers and evangelists, who had no successors after the first century. The local ministries were deacons and presbyter-bishops. The first deacons were the seven chosen in Acts 6. In the New Testament, presbyters and bishops denoted one and the same group of people.
Baptism was performed by immersion on conscious believers. The Lord's Supper was celebrated weekly. Meetings were held in homes with the singing of psalms.