Dating the book of acts
"The dominant view in Acts scholarship places Acts around 85 CE, not because of any special event linking the book of Acts to that date but as a compromise between scholars who believe it was written by an eye-witness to the early Jesus movement and those who don’t.
argues for a more rigorous approach to the evidence.
For example, Acts -17 reads, "We set sail from Troas, making a straight run for Samothrace, and on the next day to Neapolis, and from there to Philippi, a leading city in that district of Macedonia and a Roman colony. She began to follow Paul and us, shouting, 'These people are slaves of the Most High God, who proclaim to you a way of salvation.'" Paul exorcised her and was imprisoned for his trouble.
200 CE), proclaims that it is the euangelion kata Loukan, the Gospel according to Luke. Marcionem 4.2.2), nor Clement of Alexandria (Paedagogus 2.1.15 and Stromata 5.12.82), who also ascribe the third Gospel to one called Luke.
This attestation probably does not stem from reading Irenaeus (Adv. Indeed, considering that the immediate recipient of Luke is mentioned in the preface, and given that the author of the third Gospel is aware that many other accounts have been drawn up before him, it is entirely probable that the author had indicated his name on the autograph.
(The "most excellent Theophilus" mentioned in the preface of Luke is most likely his patron, as seen in the similar references to "most excellent X" in the prefaces to the De libris propriis liber of Galenus, the De antiquis oratoribus of Dionysius Halicarnassensis, the Scriptor De Divinatione of Melampus, the Peri ton kata antipatheian kai sumpatheian of Nepualius, and both Josephi vita and Contra Apionem of Josephus.) This Luke has traditionally been identified as the one named in Philemon 24 as a co-worker of Paul.
Does the internal evidence support the idea that the author of Luke-Acts had known Saul of Tarsus?
Search for dating the book of acts:
If the author was a companion of Paul, who accompanied him on some of his travels, then those sections of Acts that deal with Paul may be regarded as eye-witness reports about him and his life.