> “But to Paul, being a Christian was no different than being an Essene, a Pharisee, or a Sadducee: they were Jews. They attended synagogues and sacrificed at the Temple. There was simply no “new god” in any of it until “John,” that is—when the Nazarenes were thrown out of the synagogues and their books rejected by the rabbis c AD 90.”
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You really ought to try actually READING what Paul and John wrote; it would completely eliminate your confusion. The epistle to the Romans in particular should do the trick.
They were never thrown out of any synogogue; they worshipped in them for several hundred years until The pagan Roman dictators took control over all worship, and removed every shred of obedience to the Lord’s commandments.
Paul wrote all sorts of things to different crowds in order to be "all things to all men" and "John" is an interpolation, so I suggest you follow your own advice.
They were never thrown out of any synogogue
Christians were declare apostates by the rabbis in Jamnia by the end of the first century and were no longer considered Jews by official Judaism.
No doubt, Judaizing Christians continued to exist and worship in their own "synagogues" and still do to this day under the guise of "Messianic Jews."