I see a lot of people claiming something as complex as the life here on earth must have a creator. Now my question is for those who claim the God of the Bible is the one. How do you make the leap from there having to be a creator, to the creator being the God of the Bible?
You're following a very similar line of questioning to my own, although obviously given the icons next to our names I made a few decisions of my own following the questioning.
When I was looking for that "something more to life" I considered the whole argument about a creator and concluded that, on the balance of probability, it was more likely that god/s existed (small g used on purpose, given at the time I didn't know what form the deity or deities took).
From there the rest of the journey for me was the kind of thing I can describe but not in the sense of being able to point to something specific and saying "look, there it is, you can see it too". The first time I set foot in a church in 15 years (excluding the usual weddings, funerals etc) was in September 2007. Previously I'd been sufficiently hostile to Christianity that I'd seriously considered burning every Bible I owned (I'd been given a few, and bought one for myself many many years previously), and yet the minute I set foot in that church I could sense an overwhelming sense of something peaceful in a way I just couldn't put into words. The reason I'd sought a church was simply because out of nowhere an instinctive desire to find some form of peace had come over me, also in a way it's impossible to put into words.
So there I was, standing in this church in my work clothes (pinstripe suit and all that) and for no apparent reason struggling not to just break down and cry. So I sat in that church, alone, trying to make sense of it all.
Curiously, when I approached that church I could feel the peace attracting me to it from some distance away. When I approached mosques and temples of other religions I felt nothing of the sort.
Until that time I regarded magick (the ways of the occult) as something to be used freely for personal gain, even if that "personal gain" meant using it to hurt others. People I knew who were open-minded about the existence of supernatural powers were typically quite taken aback at my attitude that if someone got in the way of the powers then it was just too bad for them. Obviously such an attitude is pretty much the exact opposite of the attitude of a Christian, which if anything makes the turnabout even more remarkable.
Since then I can describe things that confirm my faith in God (the God of the Bible) is well placed. I've seen things that can only be described as miraculous, even given the things I experienced during my time in the occult.
What I've described might or might not be something that specifically convinces you that the God I now worship, the God described in the Bible, is the one true God. But what I can say is that what I have seen is enough to convince me beyond any doubt at all that turning to Christ is the only option that's worth anything at all. Which reminds me of the story of the blind man healed by Jesus in John chapter 9. His words were, "One thing I know: that though I was blind, now I see."
