- In the case of "Mark" (author) the gentilizer was a Paulinist.
- In the case of proto-Luke, the gentilizing feature is confirmed by the Marcionite use of the Evangelion.
Once the basic kerygmatic - or even fictional - character of the Gospels is established, this also explains why strange experiences of déjà vu recur again and again. Those who have some familiarity with first-century history sometimes have the impression that the image of Jesus in the gospels is fused with that of other purported Messiahs and prophets of the time. Certainly this could be because at the time the gospels were written, various messianic traditions had merged together and, more than a century later, were apparently difficult to distinguish. But it could also be explained by the fact that the evangelists took great literary freedom and, in shaping their image of Jesus, had no qualms about drawing inspiration from other first-century heroic figures and transferring their traits to him.
(my translation)
Detering has listed the various Josephian figures from whose fusion the Gospel Jesus was fabricated. By so doing, he has gone very close to prove why Pilate was connected with Jesus: the name of "Pilate" was derived freely from Josephus, with the same freedom by which "Jesus ben Ananias" was used to fabricate a portion of the Passion story.
The probability is therefore very strong that the author of the Oldest Gospel thought about himself (or, which is the same: he wanted someway to introduce himself) as a collector of different messianic traditions.
Hence, while Marcion was a collector of "Pauline" epistles, I think that also the author of the Oldest Gospel was, in his own right, a collector of different messianic traditions/legends.
The impulse behind the work of collection was the same: to derive respectively an ideal image of the Apostle, and an ideal image of the Hero of the cult.