First I must ask you here. What you do think "God" is anyway? Is it a person or something else? Without defining it, it might not be accurate to say that "God is beyond our body" or "God is within each of us". People generally have some conceptualization of "God" as a "non-material" entity that they know from common parlance. But the technical definition(s) for God in Hinduism is(are) different and rather based on common sense and the individual's capability to understand.