I don't get it. Even if the big bang has a "cause", that doesn't necessarily follow that God doesn't exist. It seems to me that this is a False Dilemma. Why God cannot cause the universe to exist?6. Conclusion: Cosmological and Teleological Arguments for God's Nonexistence
The argument of this paper might seem at first glance to tell us more about the nature of causation and the nature of God than about atheism versus theism. "A divine state cannot cause the universe to begin to exist" does not entail that God does not exist or that the big bang is not a logical result of a divine state. It merely entails that we cannot describe a divine state as the originating cause of the universe.
Nonetheless, there are important and perhaps decisive implications for the debate between theism and atheism, namely, that arguments from the necessary truth, a priori truth or empirical truth of some causal principle cannot be a relevant premise from which to deduce or induce that the big bang is the logical consequence of God standing in the relation R to the property being the big bang. Consider the following argument:
(4) Whatever begins to exist has a cause.
(5) The universe begins to exist.
Therefore,
(6) The universe has a cause.
This argument fails to support the theses that God exists or that there is a divine cause of the universe. Indeed, this argument entails that the universe's existence is the result of something other than a divine state, namely, a cause. Nor can any inductive argument based on the fact that every observed event has a cause be used to support the thesis that the big bang is the result of a divine state, since this inductive argument instead supports the thesis that the big bang is the effect of some cause.
Besides, we are not talking about a mere cause and effect problem here. Before the universe, there was no time or space to create any cause and effect. So the rules of cause and effect don't necessarily apply to this state. If you want to argue about the existance of God related to the beginning of the universe, you have to go into relative spatial-temporal situations that are quite hard to understand and discuss.
Why is #7 true at all?(4) Whatever begins to exist has a cause.
(5) The universe begins to exist.
Therefore,
(6) The universe has a cause.
(7) If the universe is the result of a cause, it is not the result of God standing to the universe in an R relation.
(8) It is an essential property of God that he Rs any universe that exists.
Therefore [from #7 and #8],
(9) There is no possible world in which it is true both that God exists and that there is a universe which is the result of a cause.
Therefore [from #6 and #9],
(10) God does not exist.
That's why there are agnostics. This argument is an induced argument. It doesn't prove anything.(11) Artifacts are caused to exist by some intelligent being(s) with some purpose in mind.
(12) The universe resembles an artifact.
Therefore, it is probable that:
(13) The universe is caused to exist by some intelligent being(s) with some purpose in mind.
If this is an adequate argument from analogy, then it is probably true that the result-yielding relation that is involved in the explanation of why the universe exists is a causal relation in which some intelligent being(s) stand(s) to the universe. It follows (given propositions #7 and #9) that God probably does not exist.
Still.... premise #7 doesn't seem right.
Aside from that, God seem to be only possible if there is an additional dimension where space-time does not exist, or at least not in the way we think of. That's the only way He can truly have the characteristics that are assigned to Him (i.e omipresent, omniscient and omnipotent). From that, it follows that the only characteristic of God that is debatable is the "omnipotent" one. That implies that there must be a connection between God's dimension and our 4 dimensions. There's some hint of that in quantum physics, with matter originating from the vaccum. But I'm still refraining myself from calling it "evidence".