What is the account that we get from Acts about the early history of the Christian church?
The Book of Acts records or reports that there was a special event that took place at Pentecost, which would have been the next pilgrimage festival after the Passover at which Jesus died. And at that time the disciples of Jesus were gathered together in Jerusalem unsure of what their future would be, when all of a sudden the spirit took hold of them and enabled them to speak in tongues, and that speaking of tongues is understood by the author of the Book of Acts to mean speaking in all of the languages of the world. So with the power of the spirit behind them, the disciples of Jesus immediately began a missionary campaign and started bringing people into the fold, converting them to belief in Christ. And from that time forward the mission moved ahead in the rather smooth way, directed by the spirit and by all of the apostles who acted in concert with one another and agreement with one another. That’s the picture that we get in Acts. The historical reality is probably much more complex.