When the day of Pentecost came, they were all together in one place…
All of them were filled with the Holy Spirit and began to speak in other tongues as the Spirit enabled them.
Acts 2:1-4 NIV
The apostles left the Sanhedrin, rejoicing because they had been counted worthy of suffering disgrace for the Name. Day after day, in they never stopped teaching and proclaiming the good news that Jesus is the Christ. Acts 5:41-42 NIV
On that day a great persecution broke out against the church at Jerusalem, and all except the apostles were scattered throughout Judea and Samaria.
Those who had been scattered preached the word wherever they went.