Would you believe me if I said I am a creationist who believes in the big bang and evolution?
I believe that God created the universe. It's the simplest (if not only) explanation for why we're here. Something or somebody had to set everything in motion. Something has to be infinite, or there would be nothing. God fits the infinity thing pretty well.
Anyway, if God created the universe, which is the only conceivable explanation, that means he created everything. That includes mathematical principles and the laws of physics, and everything that can come from them.
Do you doubt that God could not in His infinite wisdom use his own creations as He will? God is smart, by definition. Smart beings are efficient. Why would God micro-manage every tiny little thing if His laws of physics and math could do stuff for Him? Even if it would be ridiculously easy for Him to do, which it would be, the only reasonable thing to expect is that the universe will be scientific, because God is infinitely efficient. That means a big bang (caused by God, of course) and some basic rules to govern how the universe works is all there would ever need to be to bring about life, evolution, whatever. So I believe in creation, but not in a literal sense.
After all, haven't we learned more about our universe since we got our religious texts that told us how we came to be? We were pretty clueless back then. If God was going to tell us stuff, wouldn't it make more sense to be more general and symbolic? Would people thousands of years ago understand the big bang, or evolution, or even the most basic physical concepts? Of course not. Again, God is smart. He's not out to confuse us. When you talk to a young child, don't you use words that they can understand, and use analogies or metaphors to get your point across to a lesser mind? Our tiny brains cannot possibly comprehend the complexities of the universe God created. We are His children, and are not as wise as He is. We can grasp simple concepts of "let there be light", but not the big stuff. Even now, very few of us understand a whole lot. Those scientists on the leading edge of quantum mechanics, etc. are pushing the boundaries of knowledge, but we can never know it all, and we can only work with relatively simple models.
Even then, Genesis does offer some very interesting parallels to what we now know of the universe. In a sense, Genesis is merely a simpler model of our universe's origins, very carefully crafted for our simpler minds. Our knowledge will continue to expand, but we will never have the full thing all wrapped up in a neat package. Knowledge is infinite, and only an infinite God can know it all.
God is everywhere, right? Well, in that case, God is the universe, and everything in or about it. Evolution is God at work. That means that if evolution created us, which is clearly the case, then God created us.
So just as I like to think of God as "the big computer in the sky" that not only calculated how to make the universe work perfectly, but also invented the entire concept of calculations, I know that is not the end of it. No description can encompass all of God. God is love too. Why else would there be Jesus, or heaven? Is God jealous? A better question would be, is there such a thing as jealousy?
We are like an experiment. God has a hypothesis, and already knows the results. Or maybe not, if you believe in free will. In any case, God is cheering for us to win, just like any scientist hopes that their experiment succeeds. So I guess we have free will after all, otherwise what's the point? Nobody can answer that question for sure, but I'd wager that we do have free will. Even if our brains already decide what to do before we're conscious of it, as shown in a fairly recent study, they're still our brains. Even if we could know exactly everything about the universe, every particle, every bit of energy, and every physical law, I bet there'd still be some random unexplainable factor. Either you can believe that is God's active intervention or the basis of free will.
One last thing, before I wrap this up. Where did God come from? This is another question we could never hope to answer in a comprehensible way, but I'll throw my theory out there anyway, and try to convince you of why I'm probably right. I believe that God created Himself out of nothing. If God is all-powerful, then would this impossible task be above Him? Not if He's all-powerful. It's a paradox, of course, but isn't that the basis of faith? To believe in something without understanding it? That is how I define my faith. Our existence is impossible. It is miraculous. Only God can perform miracles. God's existence is also seemingly impossible, but necessary if we are to exist as well.
So after reading all that, hopefully you can understand why I get annoyed when people say that the universe is only a few thousand years old, instead of a few billion, and reject all of the proof around them. They are the ones who are lacking in faith, if they don't believe that God could work within His own system.
When the evidence all around us points to evolution and the big bang, it is not God trying to trick us or test us to find the true believers, He simply hasn't told us the whole story. The whole story would take eternity to tell and would just confuse us unnecessarily. We don't need to know everything to believe. Maybe when we die we'll learn the answers. Maybe when we die, we'll no longer care so much about the details anymore, and just accept it.