Can anyone provide an argument for a necessary being?

[MindForgedManacle]

Aristotle himself was not trying to give a proof for a divine being. It just so happened that a working definition for a nessesary being came out of his argument. The question with which he was concerned was how things preserve their identity throughout change. The atheistic dilemma is to solve that problem without referring to a fundamental principle governing the tension between static being and constant change.

That's hardly an atheistic dilemma. More like a problem for anyone claiming the identity of matter really persists in any strong sense. It's easily ported to your dualistic view of identity as well:

Are people who go to heaven or hell the same person as they were on Earth? If so, then why can they not sin in heaven, or (I dunno) still obtain salvation in hell. Claims of "Beautific Vision" keeping us from even desiring to do anything but abide by God just raises the question of why we weren't created with Beautific Vision to begin with.