Isaiah 53, 700 B.C: Historical Evidence of the Divine Omniscience.

[Bucky Ball]

The new testament is christian fanfic of the old.

In some ways, yes. 

"Matthew" was created to demonstrate to a Jewish community that (the *new* idea of a "prophecy being fulfilled*  was accomplished in Jesus. 

I am of two minds about the historicity questions. 
a. A lot of the material in the gospels reflects the concerns of a post-temple destruction Jewish rabbi community, in the LATE 1st Century. They were concerned how to deal with a complex 
legal system now that the temple was gone and the Jewish diaspora was happening, ie : simplify it all "love god and love your neighbor". 
b. but ... there was some impetus, and I don't know what that was, why the sect of Judaism, the "Way" sect began to grow in the mid First Century. 
They remained Jews at least until the end of the century when the High Priest (in exile) required the Benedictions against the minim" (the Way sect members) ... ie (The Expulsion Curses) to be read at the end of every synagogue service. 

The separation of Jews from Gentiles was far more complex and "local" than we know about. 
In the year 400 CE, the Archbishop of Constantinople, St. John Chrysostom, in a Christmas sermon which somehow they still have, told HIS congregation (of Christians) to stop going to synagogue. 

Go figure.