The purpose and style of Acts
Although the title, Acts of the Apostles, suggests that the aim of Acts is to give an account of the deeds of the Apostles, the title actually was a later addition to the work (about the end of the 2nd century). Acts depicts the shift from Jewish Christianity to Gentile Christianity as relatively smooth and portrays the Roman government as regarding the Christian doctrine as harmless. This book is the earliest “church history,” viewing the church as guided by the Spirit until a future Parousia (coming of the Lord).
Probably written shortly after Luke (c. 85) as a companion volume, in no manuscripts or canonical lists is Acts attached to the Gospel.
Luke edited his history as a series of accounts, and thus Acts is not history in the sense of accurate chronology or of continuity of events but in the ancient sense of rhetoric with an apologetic aim. The author weaves strands of varying traditions and sources into patterns loosely clustered around a nucleus of past events viewed from the vantage point of later development.
The structuring of the material by time and geography may account for the unique way in which both the Ascension of Christ to heaven (40 days after the Resurrection) and the outpouring of the Spirit at Pentecost (50 days after the Resurrection) became fixed and dated events.
The redactor (editor) of Acts composed speeches with primary primitive material within them; about one-fifth of Acts is composed in this way. This manner of using speeches was part of the style and purpose of the work and was not unlike that of other ancient historians such as Josephus, Plutarch, and Tacitus.
In the latter part of Acts are several sections known as the “we-passages” (e.g., 16:10, 20:5, 21:1,8, 27:1, 28:16) that appear to be extracts from a travel diary, or narrative. These do not, however, necessarily point to Luke as a companion of Paul—as has been commonly assumed—but are rather a stylistic device, such as that noted particularly in itinerary accounts in other ancient historical works (e.g., Philostratus’ Life of Apollonius of Tyana). Though the pronoun changes from “they” to “we,” the style, subject matter, and theology do not differ. That an actual companion of Paul writing about his mission journeys could be in so much disagreement with Paul (whose theology is evidenced in his letters) about fundamental issues such as the Law, his apostleship, and his relationship to the Jerusalem church is hardly conceivable.
Acts was written in relatively good literary Greek (especially where it addresses the Gentiles), but it is not consistent, and the Koinē (vernacular) Greek of the 1st century was apparently more natural to the writer. There are some Semitisms, especially when stressing Jewish backgrounds; thus, Paul is called Saul in accounts of his conversion experience on Damascus road. In chapter 17, Paul’s speech on the Areopagus, a hill in Athens that traditionally was the meeting place of the city’s council, for an intellectual Athenian audience is in good Greek, assimilating Gentile thought patterns, but is expressed in Old Testament universalistic terms.