story identification - 1990s post-apocalyptic independent movie with religious elements?

Ok, here is some hard one.

Context:

It is a movie I watched in late 1990s in TV. The movie itself was an American or German production from 1990s.
It was rather poorly made and it looked like an independent film.

Plot:

The movie was really weird. It was placed in post-apocalyptic setting.
The protagonist was a some kind of prophet, who went on a journey in order to write a new Bible. He also waited for a Second Coming. And there was a satan.
I remember particularly one scene from this movie: someone (probably protagonist) sits on a barber seat when some satanic-like character walks around him saying "cut your hair".
Did I mention that the movie was weird?

Things I vaguely remember :

• I'm not sure but probably the music used in the movie was (black) metal.


• The protagonist was a young adult with long black hair


• Walking through desert

And no, I didn't confused this movie with black metal music videos.

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