So we are to believe your God exists but we cannot attempt to comprehend the nature of his existence.
Actually, I personally do not care what you choose to believe simply because it would truly be a waste of time. You can certainly attempt to understand anything you'd like. Some things you will understand, and others you simply won't because you are a LIMITED creature (aren't we all, for that matter).
It's hubris to believe you are going to understand everything you attempt to grasp intellectually.
What I do think however is that atheists such as yourself are quite uncomfortable with the idea of religion because of the ways man twists it into ideology. That I can not blame you for.
If you are certain there is no God then the burden of proof shifts to your lap whether you like it or not. It's only fair since you are asking for evidence from those that believe.
So because I'm willing to wager you will not be able to produce said evidence, I actually wont be banging my head against anything because I'd win. However, you are free to bang your head while you attempt to disprove the existence of something beyond your ken.