What IS good, and how do we determine it?

[Metis]

Catholics don't believe James was Jesus's brother. They don't claim to know what he was but most say cousin.

It's got a fair bit of a case behind it, the word used for "brother" in the original language and context could just quite as easily mean any male relative. It's only really the Protestants who ignore the original context who say James was Jesus' brother, and even then many don't.

Yeah, I corrected myself pretty quickly after this misstatement of mine.  I come from a Protestant background, and was taught that James was actually his brother by birth.

Funny how such an important person in the life of Jesus could be the subject of dissension.  It's almost as if the story was made up ...

Eh, they need to get 1UP's over each other. Each tiny little "victory" can be thrown at the other side. "SEE!! YOU'RE UNBIBLICAL! YOU'VE GOT IT ALL WRONG, WE ARE THE FEW, WE ARE THE REMNANT!".

It seems pedantic to us, but just one error like that can bring a house of cards tumbling down, especially for groups which claim the inability to be mistaken. You'd be surprised at how many belivers have had their whole lives shaped by just one line of scripture; I think Edith Stein for instance (a Philosophy PhD holding Jew and later saint) converted to Catholicism after reading Teresa of Avila's hagiography.