and they hypothesise some lost historiographical sources that both Josephus and the author of the Acts of Luke had recourse to use. Manuscripts There are two major textual variants of Acts, the Western text-type and the Alexandrian. The oldest complete Alexandrian manuscripts date from the 4th century and the oldest Western ones from the 6th, with fragments and citations going back to the 3rd. Western texts of Acts are 6.2–8.4% longer than Alexandrian texts, the additions tending to enhance the Jewish rejection of the Messiah and the role of the Holy Spirit, in ways that are stylistically different from the rest of Acts. The majority of scholars prefer the Alexandrian (shorter) text-type over the Western as the more authentic, but this same argument would favour the Western over the Alexandrian for the Gospel of Luke, as in that case the Western version is the shorter. Genre, sources and historicity of Acts The title "Acts of the Apostles" (Praxeis Apostolon) would seem to identify it with the genre telling of the deeds and achievements of great men (praxeis), but it was not the title given by the author. The anonymous author aligned Luke–Acts to the "narratives" (διήγησις, diēgēsis) which many others had written, and described his own work as an "orderly account" (ἀκριβῶς καθεξῆς). It lacks exact analogies in Hellenistic or Jewish literature. The author may have taken as his model the works of Dionysius of Halicarnassus, who wrote a well-known history of Rome, or the Jewish historian Josephus, author of a history of the Jews. Like them, he anchors his history by dating the birth of the founder (Romulus for Dionysius, Moses for Josephus, Jesus for Luke) and like them he tells how the founder is born from God, taught authoritatively, and appeared to witnesses after death before ascending to heaven. By and large the sources for Acts can only be guessed at, but the author would have had access to the Septuagint (a Greek translation of the Jewish scriptures), the Gospel of Mark, and either the hypothetical collection of "sayings of Jesus" called the Q source or the Gospel of Matthew. He transposed a few incidents from Mark's gospel to the time of the Apostles—for example, the material about "clean" and "unclean" foods in Mark 7 is used in Acts 10, and Mark's account of the accusation that Jesus has attacked the Temple (Mark 14:58) is used in a