What I'm wondering is what's the point of discussing the "benefits" of having this "Holy Spirit" thing if this "Holy Spirit" thing is described in a book that is erroneous? I'll save you from the circular reasoning that has been previously used to justify the Bible + HS by stating that you can't say the HS within you is proof that the Bible is true because the HS is a concept derived from the Bible, therefore meaning you can't use the thing you're trying to prove.
"It is the mark of an educated mind to be able to entertain a thought without accepting it" ~ Aristotle