Yep, there is.
Well...yes.
I believe in a spirit God who can manifest in flesh form.
That requires belief in a spirit realm...and I believe that realm is something a bit more spiritual than Doctor Who would lead you to believe.
Emperical basis? I've been witness to spirits with vision, hearing, and the 6th sense. That annoying 6th sense that I tried to get rid of, or ignore... Yeah, whatever. I finally gave in and started believing it.
(side note: I really wouldn't care to taste/touch/smell most of the spirits I've witnessed.)
I've both witnessed and performed exorcisms....some stuff that just defies mundane explanations and demands a spiritual answer. Before all that, yep, I could have entertained the possibility it's all bunk. But it's just like trying to deny feelings that I haven't felt or emotions that I don't hold. For instance...I don't like Oprah....but I can't deny that there are many people who do.
I don't pretend to know it all, but I'm convinced.