You are correct, I don't know much about Judaism.
What Jewish writings outside of those stories in the Old Testament Predict the Messiah equated with Jesus?
Also, if there was no bible to tell Christians that the event your quote described was some god-related event, why would they associate it with a particular god? I mean, it happened to a bunch of Romans, it would have been associated with a different god altogether. Never mind that we cannot know that it did indeed happen at all.
By the way, interesting avatar. Did you draw that? What does it represent?