The church began on Pentecost, fifty days after Jesus’ resurrection. After rising, Jesus spent forty days teaching His disciples and preparing them for the work ahead (Acts 1:3). Just before He ascended, He told them to stay in Jerusalem until the Holy Spirit came and empowered them (Acts 1:8). Pentecost was when that promise was fulfilled.
Acts 2 describes how the Holy Spirit came. He arrived with a sound like rushing wind that filled the house, and the disciples began speaking in the languages of those visiting Jerusalem (Acts 2:2–6). This drew a crowd, and Peter preached that Jesus, whom they had killed and whom God raised from the dead, is Lord and Messiah (Acts 2:22–24, 32, 36). His message cut the listeners to the heart, and they repented (Acts 2:37–38). About three thousand believed and received the Holy Spirit that day (Acts 2:41). This was the start of the church.
Before that day, Jesus had promised to build His church (Matthew 16:17–18), and He has faithfully kept that promise since. Scripture records its early growth as the gospel spread beyond Jews to Samaritans and Gentiles (Acts 8–28). Jesus has promised that the church will continue to grow to the end of the age (Matthew 28:19–20).
When you hear the word “church,” what do you think of? A white building with a pointed steeple? The church building may look like that—or it may be a tent in the middle of a plain or the small house of a believer. But that isn’t really “the church.” The church is not a building but a people, known as the “body of Christ,” united by faith in Him (1 Corinthians 12:27). What should the church look like? Scripture highlights clear marks of a true gathering: the faithful preaching and teaching of Scripture (2 Timothy 4:2), the regular practice of baptism and the Lord’s Supper (Acts 2:41–42), loving and honest care for sin within the body (Matthew 18:15–17), and a community marked by genuine love for one another (John 13:34–35).
What role does each believer have in the church? Salvation is not an isolated experience. God saves individuals so they will glorify Him (Ephesians 1:11–12) and serve others with the gifts He gives (1 Corinthians 12:4–7). Each believer, then, has a place in the life and growth of the church, and each believer is needed.
Belonging to Jesus means belonging to His church. Part of your responsibility is to gather, worship, encourage, and serve regularly. Christ continues to build His church today, and if you are a believer, then He calls you to be an active part of the body He is forming.