Here’s a concise formulation of the Cosmological Argument:
1) Whatever begins to exist has a cause.
2) The Universe began to exist.
3) Therefore, the Universe had a cause.
What this means quite plainly is that the universe along with space, time, matter and energy came into being. The universe is not a necessary entity; it is a contingent entity. It does not have an infinite past. The only necessary being/entities one can think of are a) numbers b) an unembodied personal mind. This is the conception of God that theists work with—a personal, unembodied, spaceless, infinite, eternal mind. It goes without saying that numbers though necessary, do not have any creative ability; they do not stand in causal relations. They are causally effete. It follows that the cause of the universe is a mind greater than the universe—by which we mean something that is immaterial, boundless, spaceless and eternally pre-existent.
How is it then that when you present the Cosmological argument, an atheist’s response is “What Caused God?” That question simply shows a misunderstanding of the argument. Anyone asking this question should familiarize him/herself with what “necessary” and “contingent”entities are. That question is as laughable as asking “What makes a triangle have three sides whose angles add up to 180 degrees?”, or “Why should a triangle have three sides with angles that add up to 180 degrees?” The answer is as simple as saying “That is what a triangle is DEFINED as”. I have nothing to discuss with anyone who wants to argue with definitions. If you do not like the definition given, go ahead, redefine and let's see if we may agree or disagree.
Another argument an atheist may make when confronted with the Cosmological Argument is to suggest that “the universe is uncaused” which is a patently false idea given its finitude in the past. An atheist is left with the worst option of declaring that the “universe just popped out of nothing, from nothing and by nothing” and that I suggest is even worse than magic. Nothing pops out of nothing, from nothing, by nothing. To suggest otherwise is to be painfully irrational. Not even radioactive decay; or virtual particles which merely arise and disappearfrom fluctuations in the quantum vacuum—a veritable ‘sea’ of energy. So Being does not come from Nonbeing. Nothing spontaneously pops out of nothing, from nothing, by nothing. That is the full explication of the first premiss.
To refute the argument, you have to shoot down or falsify the premises. Otherwise, you'll arrive at the painful conclusion whether you want to or not.
Now, let's examine your formulation of the Cosmological Argument;
On the Cosmological Argument (CA), Part 2.
Hello Huxley: Sorry for the delay. Good to hear from you again.