The Kalam Ontological Argument

The Kalam Cosmological Argument is well known: if the cosmos had no beginning, it would not require a creator. Yay, for the atheist! But then, the cosmos would be infinitely old; and, so, it would be impossible for finite events (such as all those that constitute reality insofar as we can apprehend it) to complete the infinite traversal from the infinitely distant past to any moment whatever of the cosmogonic timeline. Zeno would be pleased. There could then be no present moment, for no such present moment could ever yet have happened. Nothing whatsoever could then ever happen. But, tace Zeno, there is always a present moment, events do transpire, ergo etc. The infinity of the past is refuted by the reality of any present event (or any past event, for that matter). The cosmos is therefore temporally finite, had a beginning, so stands in need of an extracosmic cause, and so forth: God, QED.

But there is also an analogous Kalam Ontological Argument. Ontological arguments proceed from a priori premises, that do not at all depend upon a posteriori observation, such as your indisputable observation of this present moment of your experience. They work whether or not there is anything out there to be observed, or anyone to observe it.

Nature Cannot Explain Anything

Nature cannot explain supernature, and nor can it explain itself. Nor then can it explain any part of itself. There be no complete explanation of any part of nature by any other part of nature, or even by the whole of nature.