The Book of Acts establishes the "true church" as a living, Spirit-empowered community rather than an institution. Acts 2:42-47 outlines four core essentials: apostolic teaching, fellowship, breaking of bread, and prayer. These pillars foster rapid growth, radical generosity, and an active, outward-facing witness.

1. Devotion to the Apostles' Teaching - The early church was steadfast in learning. Because there was no New Testament canon at the time, they devoted themselves to the teachings and doctrines delivered by Jesus' apostles. This means true believers prioritize the faithful exposition of Scripture and guard the truth of the Gospel.
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3. Deep Koinonia (Fellowship) - In the Book of Acts, fellowship went far beyond just socializing; it meant active participation in a common life and mission. The believers were unified, and they practiced radical generosity by sharing resources and selling possessions to ensure no one in the community was in need.
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5. The Breaking of Bread - This practice included gathering together, and both sharing communal meals ("glad and sincere hearts") and observing the Lord's Supper to remember Christ's sacrifice. It signifies unity, hospitality, and a continual focus on the death and resurrection of Jesus.
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7. Devotion to Prayer - Prayer permeates the entire Book of Acts. The church was born during a prayer meeting at Pentecost, and they continually sought God for boldness, direction, and the empowerment of the Holy Spirit in the face of persecution.