Hawking wrote this about the provenance of the universe in book: A Brief History of Time
"Why did the universe start out with so nearly the critical rate of expansion that separates models that recollapse from those that go on expanding forever, that even now, 10 thousand million years later, it is still expanding at nearly the critical rate? If the rate of expansion one second after the Big Bang had been smaller by even one part in 100 thousand million million, the universe would have collapsed before it ever reached its present size." *
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http://hyperphysics.phy-astr.gsu.edu/Nave-html/Faithpathh/hawking.html
"Why did the universe start out with so nearly the critical rate of expansion that separates models that recollapse from those that go on expanding forever, that even now, 10 thousand million years later, it is still expanding at nearly the critical rate? If the rate of expansion one second after the Big Bang had been smaller by even one part in 100 thousand million million, the universe would have collapsed before it ever reached its present size." *
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http://hyperphysics.phy-astr.gsu.edu/Nave-html/Faithpathh/hawking.html
Atheist Credo: A universe by chance that also just happened to admit the observer by chance.