To ask for which is true:

Anything and any religion is true... it's not a boolean ;-)

Why?

Imagine you got a sheep which is black on the one side, and white on the other side.

You have two fanatics at each side,
killing each other because the one on the white side
sits there and sees only the white part -
if the other one claims that the whole sheep must be
black, this is what we call blasphemie.

I like the spiritual idea that we are creating our own
stuff - so if 4 example, millions of people believe in
christianity, theiy are creating a realm that cristians
can habit in after death.

It's just an idea ... but i like it.
If it was true, then anyone would know there are black
sheeps AND white sheeps, and so no one of both was
a liar to the other.

Have fun!