The Possible Impermanence Of God's Existence

Christians tend to use blatantly arbitrary or vague definitions of the word "God," ranging from the incredibly ambiguous phrase "the ultimate being" to red herrings like "the only being that knows everything" (both are definitions of God I have encountered).  The problem is not just limited to Christians, of course.  When asked for a clear definition of the word, few people of any ideological position can supply one.

The concept of a true deity is far simpler than many of the offered definitions.  God is the uncaused cause, an existent which never had a beginning and has the power to bring other things into existence.  Some would go further and claim that this entity must exist--not in the sense that something with the ability to create other things had to start the causal chain that resulted in the present moment, but instead in the sense that it is logically impossible for a divine being to cease to exist.

Upon a rationalistic investigation of the issue, it should be clear that nothing about the nature of an uncaused cause requires that it be incapable of ceasing to exist; its nature only means it never began to exist.  Even if something existed without end, that does not mean it is utterly impossible for it to stop existing.  This would only establish that it did not stop remaining in existence.

There is only one thing that could not cease to exist because of its own nature, and it is not the material world or the divine mind.  Only the necessary laws of logic dictating what must be true at a minimum (logical axioms) and what follows or does not follow from certain concepts have always existed and could not cease to exist because of their own intrinsic nature--not because of a dependence on any other thing.

It must still be clarified that it does not follow from the fact that God does not logically have to remain in existence that he does not deserve human worship.  On the contrary, nothing about permanent or impermanent existence makes a being worthy of other beings' love, allegiance, and respect.  On the Christian worldview, humans owe God worship because his nature is goodness, not because he might permanently continue existing.