"The Acts of the Apostles does not end haphazardly; Luke has achieved his purpose when he brings Paul to Rome and leaves him preaching the gospel there. Yet there is a sense in which the Acts of the Apostles is an unfinished book; at least the story which it begins to tell is an unfinished story. Luke tells how the gospel spread within one generation; the same gospel has been spreading generation by generation ever since:
Nor shall thy spreading gospel rest
Till through the world thy truth has run;
Till Christ has all the nations blest
That see the light or feel the sun."
F. F. Bruce, Past, Present, and Future: The Work of Christ (Downers Grove, IL: InterVarsity, 1979), 49.