The question atheists need to ask themselves is why would God tell us what we can figure out ourselves? Indeed the Bible does not contain a scientific explanation of our existence, but rather a transcendental explanation.
Therein lies the great fallacy of atheism. You tell me the Universe is not guided by reason because it can be explained by reason. You say our existence is merely part of a system which follows logic, and therefore the system has no logic.
If not for my angsty teenage years, I would not have challenged theism enough to discover how deep it goes. Faith is not blindly following a belief, it is giving yourself to the darkness. That we are in the dark is our innate, human condition. Faith is not complacency in a dark world, but a choice to act in darkness without worry or fear.