What is Christianity.

[Terrywoodenpic]

Did the Celtic Church have different beliefs than the Roman/Catholic Church? And, what happen when Catholics became the "one true Church?"

They were organised very differently They did not have See's under the authority of a bishop. they were based on individual communities of monks and priests. ( like the Copts)
The major sticking point's were the authority of the Pope and the date of easter.

The Celtic churches in England accepted the authority of Rome at "Whitby" However the Irish Churches held out.

The Roman Church took on the penitential practises of the Celts.

 

[Terrywoodenpic]

That's exactly what I'm getting at. Now the next step is to choose the faith that Jesus actually taught, right?

All churches have developed their own dogma since the death of Jesus. Jesus never left any instructions as to how a church should be organised.
The earliest method of faith teaching in the community that we have, is laid out in the Didache. This owes nothing to the Gospels and is clearly for the Jesus movement of the Judo-Christians, it is based on a revised form of the Jewish "two ways of life"