Have you ever heard of thinking outside the box? This implies a release from the restraints of arbitrary convention and tradition. How about putting God in a box?
You know that the former is good and the latter is not. Do you see a link between these concepts? Those who try to put me in a box by setting boundaries for the ways in which I can act find that I am too big to fit inside their box. If you want to continue with me you will have to get outside of such a box, especially if it is one you have built. I will act according to my word but you should search for and rid yourself of unexamined assumptions that limit me. Behold I will do a new thing. You must look where you least expect it to see it.