What constitutes holy scripture? Am I restricted just to the Bible? I don’t believe the Bible contains a complete description of the nature of God… actually, I believe that, if it did, it would be incomprehensible to mortal man (and, since it was written by and for mortal man, that doesn’t seem to me to be too likely.)
In fact… how do you (or I, for that matter) know that I’m not producing holy scripture myself, even as I type? After all, I’m as much God’s creation and instrument as the next bloke, just as likely (or not) to be inspired by His Holy Spirit, He has chosen less worthy vessels to reveal Himself (though don’t press me for examples of that). This may be the Gospel according to Steve; whatever it is, its authenticity is scarcely in doubt.
As for physical evidence… what, the whole of the universe isn’t enough? It’s all God’s work, it’s all miraculous, everywhere you walk is holy ground, all that background microwave radiation is just the echo of the original “Fiat Lux”…
OK, I’ll stop being facetious. I’m quite happy to concede that my belief in God is not logical or scientific; there is no test I can think of that would distinguish (on an absolute, evidentiary basis) between the universe as I see it (God-created) and the universe as - I presume - you see it (the product of natural processes). Nonetheless, I continue to believe in God. It’s not a belief founded in logic, it’s partly intuitive, partly based on subjective experiences (which I doubt I could describe in any way that would be meaningful to you - no disrespect is intended here, just a recognition that you and I are, fundamentally, different people, and what means something to me won’t evoke the same reaction in you.)
So, given that my belief is not arrived at through logic, it follows that you’re not going to argue me out of it that way… nor will I be able to come up with a logical argument that satisfies you. Well, we can agree to differ. And we can, at least, continue to discuss our differences, and consider what, logically, proceeds from the premises we’ve chosen to adopt. We are both human beings, we can communicate. Increased understanding is a good thing, and I hope this glimpse into the murky world of a believer’s thought processes helps you.