We are now entering a whole new phase of Acts, and for that matter Christianity in general.
We are moving out of the Jerusalem epicentre. This may not have been by choice, but God has a way of redeeming the bad stuff for our good and His glory AND to fulfill his mission... to spread the gospel in Jerusalem, Judea, Samaria and even to the ends of the earth.
But before this mass missionary expansion, God had to transform the heart of an enemy of Jesus, and when he dramatically did so, the world was about to change.
To this day, God is using dramatic "Damascus Road" type experiences to call people to Him.