Prior to the day of Pentecost, members that constituted the early Church were

Prior to the day of Pentecost, the members that constituted the early Church were 120. This is recorded in Acts 1:15, which says, "In those days Peter stood up among the believers (a group numbering about a hundred and twenty)...." These 120 members of the early Church were mostly Jewish followers of Jesus who had witnessed his crucifixion, resurrection, and ascension. They were gathered together in Jerusalem, as Jesus had instructed them, to wait for the coming of the Holy Spirit. They spent their time praying, studying the Scriptures, and preparing themselves for the mission that Jesus had given them to spread the gospel to all nations. After the Holy Spirit came upon them on the day of Pentecost, their numbers grew rapidly as many people were converted to the faith. The 120 members of the early Church became the foundation of a worldwide movement that would eventually grow to millions of followers over the course of two thousand years.