“Acts 15 forms the center of the book, structurally and theologically. The First half traces the movement of the gospel from a Jewish to a universal context. Following the Jerusalem Council, the Progress of the gospel concerns primarily geographical boundaries rather than ethnic or relational ones.”
David Peterson, “Luke’s Theological Enterprise,” in Witness to the Gospel: The Theology of Acts, ed. I. Howard Marshall and David Peterson (Grand Rapids: Eerdmans, 1998), 527.