God declares that He has made all things, the heavens and the earth and all that is in them. The whole of creation "sings" in harmony praising God by reflecting His blessings. Therefore, we should be able to demonstrate God exists from looking at the universe (which St Paul claims in Romans 1:20).

Everything in this universe can be said to have a preceding cause. Books don't just happen, and neither do natural objects like rocks. They need to have a cause behind them, and causes behind those causes. We find that, looking at everything, there is a necessary cause of the universe. A naturalist explanation would have to posit a universe that operates apart from the natural laws of our universe (and we who are defined by this universe will therefore not be able to experience those other laws) without proof, meanwhile a Christian can claim a divine cause to the universe while pointing at a documented history of the Divinity at work within the universe in the Bible. There is more evidence for the God of the Bible and our salvation in Christ than a godless cause for our universe.