Acts 8 is an important chapter in the Bible because the narrative begins to change. Up until now, it is Peter who has dominated the pages of Acts, but now we are going to begin to see others emerge, people like Philip and Paul.
In Acts 8, we get a glimpse into why Paul later called himself, "The Chief of Sinners" as he ravages the church going house to house arresting Christians.
But again, as our theme suggests, as the persecution increased, so did God's power. Philip goes to Samaria, fulfilling Christ's original command of Acts 1:8, and preaches Christ with great signs and wonders. The result we see is in verse 8, "And there was much joy in the city."