[rmlew]

First, Goths and Austro Goths have nothing to do with Germanics, you are mistaking an architectural style with a race of people.

I am not making a mistake here. Goths were the common name for the Eastern German peoples.
http://search.britannica.com/search?ref=B04319&query=Goth

Second, what do you call Christian Jews, or did you miss the point that Christ and all of his Apostales were Jews?
I won't speak to Jesus, as I will annoy Christians.
As far as his Apostles and other early Christians, they belonged to a diverging Sect, which became another religion over a period of 200 years.

As are a lot of my father's relatives, Orthodox Christian Jews....which means they are Jews by race not religion.

They were Jews by birth, but are no longer Jews. You can no more be a Christian and Jew than a Christian and Muslim.

Or what about Gentiles who convert to Judism? Are they now ethnically Jewish?

Gentiles who convert are Jews by religion, not ethnicity. However, they are accepted as Israelites without a tribe.

Believe it or not, even the Hebrews were once pagan.

I am aware of this. However it is religion that became the defining character.

[Stavka2]

Considering that there are several diverging strains of Judism, hardly is religion the common characteristic. Semeritans were just as Jewish in their faith as Hebrews, but were dispised for being ethnically impure. Jewish is both a religion and a nationality, that is why it is listed as such on passports in most of the world. You can be one without the other.

As for Christianity, it formerly split when the Apostale James was murdered by a mob in Jerusalem.