Wow, the thread to end all threads. woo!
To me, the most candid evidence for the existence of God is within no book, within no word, and within no doctrine. My own personal experiences have led me to conclude that God is undeniable and irrefutable, because of the ways that God himself has touched me to my core. God's elements are a paradox, and a perfect balance, such as the ying-yang.
God's greatest gift is inside of man- that gift is conscience in body through spirit, not just conscience in spirit.
God's greatest gifts are outside of man- the heavens, the earth, and all that dwell in them.
One of the universe's smallest forces, man, contains what it takes the entire universe to express: love, order, growth, and eternity.
Consider this: energy cannot be destroyed and is everlasting. Many people theorize that the universe will eventually reverse its growth which has been happening since the Big Bang. The theory states that the universe will once again become a tiny pinprick of concentrated matter, and the process will repeat itself. Consider this in nature. Do not all things replenish themselves and recycle themselves? The earth- its crust eventually is covered by magma flow and slowly moves towards the center, where it is melted and reorganized. Eventually, it comes back onto the surface, and made into fresh earth. In a larger perspective, stars eventally run out of fuel and collapse on themselves, often resulting in a black hole. Matter in the local area enters the black hole, and the energy is recycled in one way or another. Even when matter is forced through what some call the "time space continuum" the energy cannot be destroyed (albeit we don't know what happens, but have we seen everything? No- that is why we play a part in life and return to the whole where there is completion). In this same way, our spirit cannot be destroyed. After physical death, our portion of the universal conscience (God's mind?) returns to the whole (God?). In the same way, the universe may very well physically return "to itself" in the reversal of the Big Bang. Nature itself may very well, once all is done, reveal the nature of God. What we claim to me least manifest (God) may actually be most manifest in the wide, wide universe. Imagine the amazement of a person on the day of judgement, when he realizes that the entire universe, all who-knows-how-many trillions of light years of it, was a testament to the spirit inside of his tiny flesh, of which he was an integral and purposeful part.
Granted, my appeals won't please everyone. But they please me...they please my mind and spirit in truth. God is self-evident, and we have become too blind to see the obvious. And get this- we were made in His image (spirit, light, grace, mercy, love, truth, etc.) and are capable of perfection, just as He is perfect!
I suggest this site, a location of near-death experiences of many non-believers and believers.
http://www.near-death.com/origen.html
In light of all this, I hope you will have considered that all this is theoretical. Damn right it is, and so are all the other theories of science and religion. Something CANNOT be proved if it is not observable, even if a small part of it is observable. EVERY section of something must be analyzed for the sake of continuity and thoroughness. The ages of earth are unviewable because they're long gone...essentially, except for a limited fossil record, those ages are invisible. Likewise, God is invisible, except for a tiny sliver of information in texts (Bible, Quran, Torah, scrolls, etc.). Perhaps science and religion are not so far estranged as we think.
Thus, is not faith applicable to simpler things, such as physics (my chair will hold me...) and to higher things, like science and spirituality? This is simply my experience, and my experience alone. We are all unique, and God reveals himself in a different way to each man. Just don't say no to the possibility of the existence of something totally unlike your beliefs. But once you have felt God, known him, and experienced His nature, you will shudder at the thought that He does not exist...therein is darkness and no purpose, and therein you will see how deprived (not depraved...but that also) you once were without the invisible almighty, Lord of Heaven and Earth.
This is not a very well written, documented, or properly cited article. This is simply my view, not my analysis. Please don't take it too objectively or personally.