Or something with a begining but no end. But it dosen't matter. An eternal God is the only thing that really makes sense. He can't kinda-be-eternal. Everything with an end has a begining, and vice-versa.
How does a God that always was, just die at a certain point, or a God that has a begining but always was, make sense. Aren't they botha little contradictory? I may be overcomplicating the problem, but that is how I see it.