Can god create a rock so heavy that even he cannot lift?

Don't answer. Just think about it.

Paradoxes are a language limitation. Words can not capture some concepts properly and as human regularly think with words our minds get stuck. Usually words to refer absolute ideas or without any real opposite can build paradoxes. Omnipotence, void, infini

All existing things exist in context.
Theoretical concepts such as infinity and omnipotence take some atributes from a concept of existing things and removing others. By removing some atributes one is removing the concept from its basis in reality.

"Reality" and "things" are just a matter representation of causality. To represent it as matter our minds forcibly needs space and time. (Kant-Schopenhauer). In this perspective our mind chop attributes from "theoretical" concepts to be existing concept.

Concepts are a way of condencing information by grouping existents sharing distinguishing characteristics with their particulare measurments omitted. We do it to retain knowledge by subsuming an unlimited amount of existents under each concept.

Imaginary concepts such as 'GOD' are invalid because the process used to construct them is reverted.

Instead of observing existents and retaining their distinguishing characteristics, you take an already constructed concept and remove characteristics in order to construct a concept that no longer group existing entities.

Dear Svwn, you assume that all concepts are made from experience. That is something Kant prove* to be wrong hundreds of years ago. There is some "a priori" concepts. Those concepts are the nature of representation (schopenhauer). Musashi also said that.

A concept is a mental integration of two or more units possessing the same distinguishing characteristics with their particulare measurments omitted.