God as always been an opinion; sometimes local, sometimes regional; sometimes national or international.
Historically, opinions about opinions cause changes in the storylines and the game begins!
Perhaps the biggest threat to the early years of nascent christianity was the Gnostic description of the Old Testament God, Yahweh (Jehovah).
It mades so much sense to newly-minted christians who were proselytes (as opposed to messianic Jews who accepted Jesus) there was no coming together for these groups.
Jehovah the bully god was a nasty cuss. Jesus and Jehovah were Good cop/Bad cop.
Marcion used the letters of Paul (which predated the appearance of written Gospel accounts) to great avail in creating a tidal wave of Gnostic Christianity that washed right up to the fledgling Catholic Church.
The response of the Church was to smash Gnosticism with all the official Roman governmental authority it could muster.
Marcion was a wealthy fellow sort of like Charles Taze Russell in his day.
We still have Gnosticism--or a remnant of it--both in Scientology and Mormonism just as we still have the vestiges of Russellism in latter day Bible Students and Jehovah's Witnesses.