DITE:Did you clarify you question?
What is the nature of this question?
Are you questioning whether the Rock referred to in the Bible is unmovable?
Or are you questioning whether the concept of GOD portrayed in the Bible is real of logically possible?
What is your intent behind this question?
This is a Christian forum and there are rules so we need to know where you are headed with this question. I am also trying to ascertain if this is a genuine enquiry that is a part of your quest for the truth or is it that you mean to breakdown a belief that you feel is a weak one?

The thing is, if GOD can be limited by our own definitions and perception then can HE truly be GOD? We believe that GOD is All Powerful and Everlasting, way beyond the reaches of our own perception and HE is not limited by our short commings but is able to do exceedingly, abundantly above all that we may ask or think, so it matters not what you think of our believe, but I am concerned about what it is that you believe, and from many of the other responses I think that that is the concern as well. If you have questions about GOD and the Truth then why not enquire within the pages of the only book that has proven to be the Word of GOD? The Bible. Or why not follow the rules of the forum and engage in a meaningful discourse that seeks to edify yourself?