This comes from someone going by the moniker "I'm Unemployed" in the Megatokyo forums, posted three years ago (and still extant!)
"Yes there is. It can be reached by following these steps (to specify, "God" is defined as a necessary, non-physical entity in the following argument and "universe" is specified as the total sum of all physical existence [everything us mortals know and are capable of observing]). Also note that when I say "utter nothingness" I am talking about a nothingness spanning any and all planes of existence:
1) It is logically unsound to believe that the universe is a perpetually existing object since all we know of our plane of existence is comprised only of contingent substances, beings and objects. To refute this would nullify any arguments you have about there not being evidence supporting God, since both are complete unknowns and your decisions are being based upon what you know of the situation.
2) Thus, the universe must have a definite beginning.
3) If the universe has a definite beginning, then you will reach one of two ultimate conclusions: there was once utter nothingness, or God created the universe. Even if you believe in the Big Bang, that small collection of matter had to have been given rise by something else, since nothing physical is necessary. Also note that outside the collection of matter would, technically, be nothingness, so nothing could exist outside of the collection of matter (no matter, no physical phenomena, etc).
4) It is logically unsound to believe in utter nothingness, since it is impossible for something to be created by nothing. From nothing, nothing comes. If there were once utter nothingness, then nothingness would still exist.
5) Thus, it is logical to believe that a necessary, non-physical entity exists."