Again, some claim that the Universe sprung from nothing. Yet this would be a violation of the 2nd Law of thermodynamics and it is a physical impossibility. Some theorists today hold to the ridiculous notion that before the universe came into being that there was nothing; then suddenly the Universe sprang from a "Quantum Fluctuation". Simply put they're saying that when there was nothing to "fluctuate" somehow "Nothing" convulsed and "Something" appeared. Again this notion is a violation of Entropy.
Now here's the rub ...
Logic dictates that someone or something had to have "caused", "created", or "made" the initial singularity that caused all things to come into being. At the point before the singularity existed we enter a realm where there is no chain of cause and effect (at least as this universe knows it). The universe does not exist yet someone or something does exist that is capable of creating the initial singularity but has not yet done so. Whatever that initial agent is, it exists outside of chain of cause and effect, outside of this universe. In other words nothing caused it to come into being. It is eternal, unending, and not in need of a casual event (as we are) to justify it's existence. Essentially, this entity is the "Uncaused Cause".
The question now becomes, is this "Uncaused Cause", progenitor of the singularity, conscious or unconscious? Does it have personality or was it impersonal? If it is unconscious and impersonal then you have to ask yourself how consciousness and personality could arise from the mechanical, unconscious, and impersonal. In fact it could not as that would be a violation of entropy and that is an impossibility. However, if it does have consciousness and personality then both the impersonal and personal, conscious and unconscious can arise from it. Thus, the "Uncaused Cause" must have personality and consciousness and ergo we arrive at God.