What Does a Dog and God have in Common?

A dog had followed his owner to school. His owner was a fourth grader at a public elementary school. However, when the bell rang, the dog sidled inside the building and made it all the way to the child's classroom before a teacher noticed and shoo'ed him outside, closing the door behind him.
The dog sat down, whimpered and stared at the closed doors.
Then God appeared beside the dog, patted his head, and said, "Don't feel bad fella'.... they won't let ME in either."
What is sad is that it is so true.