'No Country for Old Men' Theory One: Is the Killer God?

I debated Yang for some time now on what this story is about and who the killer represents. There are no satisfactory answers. Does the story represent the messy war in Iraq? Does the killer represent the trained mercenary solders? The story is just a simple chase. There must be some deeper meanings.

One outrageous theory:

The killer is God, the Old Testament God of course. The angry, unforgiving, not-afraid-to-kill-the-innocent-people Old Testament God. Most people got killed in this movie are sinners. Certainly the main character, the Vietnam vet, was. He may seem to be a sympathetic character, the good guy. But he left a dying person in the desert and pick up a suitcase of money. He did return but it was a half day later. The dying man was dead. Is he really the good guy?

So why not the Old Testament God. He is powerful, killing everybody along the pass, almost without discrimination. He did let you live, sometimes, but always on his term. He can be slowed down once in a while. People act cute when he was slowed down.

And he cannot be stopped.

So, is he God?