The study of Acts poses a serious problem for researchers. Authorship is not the only question we must consider. The question of authorship, of course, depends in no small measure on the date we assign to the text. The two are interconnected. The differences of language and theology indicate almost beyond doubt that Luke (the author of the third Gospel) is not the author of the Acts of the Apostles.1 I shall now consider the issues that arise from this assertion.