Sure, you can put God at the big bang, but as a great man once said: I have no need for that hypothesis.
Quoting an early 19th century scientist has about the same merits as quoting from a few thousand years old book, given the scientific revolutions that took place within the last 200 years.
The first cause argument is flawed in the sense that you explain something, by invoking something else (God) that has no first cause and apparently is exempt from causality. So, for all intents and purposes, you can just scratch that "extra" assumption. Ergo: whatever caused the big bang, was there already (and given that time even didn't exist, talking about "before" is truly a stretch already).
Well, if something was already there, where did this something come from?
Interestingly, I found the zero-energy universe to be an superbly elegant explanation: Lawrence Krauss: A Universe From Nothing [youtube.com].
From the viewpoint of science, his multiverse stuff is indistinguishable from intelligent design.