A: Asking "Where did God come from" is a lot like reading a John Grisham novel and saying "This book has lawyers and judges and secretaries, but what page is John Grisham on?"
The answer of course, is that John Grisham is not in the novel at all. He lives outside of the novel. He wrote it. He created the time line, the story and the characters. The novel is a book with a finite number of pages, a beginning and an end. But John Grisham lives a life that extends far beyond that book.
Source: Cosmic Fingerprints.