Do you ever wonder what the secret of the miraculous growth of the first century church was? Well here it is!
7 He said to them: “It is not for you to know the times or dates the Father has set by his own authority. 8 But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.”
Jesus commands them here (and earlier) to go into all the earth and teach women and men how to live in the Kingdom, partnering with the Spirit's actions on the earth.
"you have filled Jerusalem with your teaching"
The pharisees themselves testify to the effectiveness of the apostle's preaching, but we see that they still haven't obeyed Jesus! They have stayed in Jerusalem. They are indeed witnessing effectively to the King's rule, but not obeying it!
8 And Saul approved of their killing him (Stephen).
On that day a great persecution broke out against the church in Jerusalem, and all except the apostles were scattered throughout Judea and Samaria. 2 Godly men buried Stephen and mourned deeply for him. 3 But Saul began to destroy the church. Going from house to house, he dragged off both men and women and put them in prison.
With the stoning of the deacon Stephen, a great calamity falls on the 1st Century church, and yet, it is the very tool that God uses to spread His people throughout the surrounding countryside, and nearby regions.
So, to be succinct, the 1st Century church-planting strategy is a) disobey God until b) persecution comes, and c) the church is scattered, so that d) the seeds of the Gospel are carried to the far corners of the earth.