After perusing a few christian sites looking for information on judging others......tell your brother that judging others is considered a sin, therefore he has lost the spirit through his sinning, therefore everything he says can't be taken seriously, believed, or be considered truth.
That's how my father treated me. My disbelief was a sin in itself. And my refusal to stop disbelieving was proof that I was following Satan, because there are only two paths--follow my father or follow Satan. There was no room for disagreement, but there was plenty of room for hate. I learned how to hate back.
> him: no, you'd only think it was fiction if you > didn't have the spirit when you made that > decision
Next time, ask him if there are objective criteria to distinguish fact from fiction. For instance, do you need the spirit to confirm that The Bourne Identity (or any other novel) is fiction?
If not, that means there are such criteria which make him categorize a novel as fiction. What are those criteria? Can you apply them to the BoM/BoA? What happens then?