Somewhere, somehow, something exists or existed that was never created. Some say our universe itself never had a beginning, other theories include timeless other dimensions that created this one. Christians believe it is God.
I believe this is what Discordians refer to as the "Proof by Semantic Gymnastics". If that was all that Christians believed about God, it would merely be an unusual definition of the word. It is, and no doubt you'd characterise this as a Good Thing, a bit of a "leap of faith" to attribute all the rest of the God stuff to this uncaused cause: being sapient, liking to be worshipped, caring about certain complex biochemical structures on one certain world lost in the infinite void, sending "His" "only" "son" there, etc.

Peter