growingbig saidFor the sake of argument let's just say that there is a god that is almighty and all powerful. Now seeing as this being is all powerful he can destroy everything at will. Now since he is all powerful he can also create, let's say, a rock that he cannot destroy or effect in any way. So if he creates this rock that he can not use his power on then he is no longer all powerful.
Growingbig, your logic is flawed in its premise as you are speaking from a human perspective. Since humanity is not infinite, almighty, all knowing, and all powerful, we see our universe as having limitations. That is the basis of your argument. You believe that there is the ability to create something more powerful than an infinitely powerful being. But if God is infinitely powerful, there is nothing beyond him. Infinity cannot be surpassed. So to assume that God would create something more powerful than himself is beyond the very nature of what it means to be infinitely powerful. It can't and won't be done. So to think that's a possibility is just folly.
Besides, if he is almighty, that would directly imply that he must also be all knowing. One can't be almighty and also be an idiot, you know? Therefore, if God is all knowing, he would also clearly see that making a rock more powerful than he is would show what a total jack ass he is for doing something so galactically stupid and proving to everyone, once and for all, that he's not all that spectacular and all powerful as everyone has made him out to be. Ergo, why would he do something so absurdly idiotic in the first place?