Again, nothing shocking here."There was great diversity within the Christian movement during the first few decades after Jesus' execution. Some of Jesus' followers (and those who never met Jesus but who were inspired by his teachings) settled in Jerusalem. But others spread across the known world, teaching very different messages. "Even in the same geographical area and sometimes in the same cities, different Christian teachers taught quite different gospels and had quite different views of who Jesus was and what he did."
Do you think its a bombshell that Christians had different opinions in the first century? Lol
An Earthly authority determined the correct understandings. This authority was the Catholic Church with the Bishops ordained by the Apostles.