In the "Pit and the Pendulum," what do you learn about the narrator from the way he describes his reaction to the sentence?

For
me, based on the narrator's reaction to his death sentence, I've always thought that the
narrator is innocent.  If he were guilty, I would assume that his reaction would have been a
reaction of resignation.  He did the crime, got caught, and is now being given a punishment that
he accepts.  That isn't the case though.  The narrator "swoons."  He is utterly
despondent.  It feels as if he can barely stand.  Like the entire room is spinning.  That tells
me that the narrator assumed that he would be found innocent.  He never thought that he could
possibly be found guilty.  

The other thing that I learn about the narrator
is that he is likely a man of faith.  Either he believes in God and salvation to his very core,
or he is at least educated enough to know about God's salvation and eternal life.  

And then there stole into my fancy, like a rich musical note, the
thought of what sweet rest there must be in the grave. The thought came gently and stealthily,
and it seemed long before it attained full appreciation;

I believe the above lines of text indicate that the narrator sees death as more than
just a release from his prison sentence and any torture that may be coming.  I believe the
narrator sees his death as an eternal rest filled with peace in heaven with the angels and God.
 As he is swooning, the narrator sees angels in the room with him.  Granted, he is imagining
them, but he could have imagined anything.  It's an important detail that he imagined angels of
God.