What is a Heavenly Father? What is spirit-possession in a human being?

If the language of the God-family is disagreeable with the understandings or dogma of Muslim belief, how can I understand the belief that it is possible for a non-human being to possess or inhabit a human being, but it is not possible or true that the Creator of both non and human beings cannot possess or inhabit one of or all of His creatures whenever and however He so wills. Does Islam mean Allah will not inhabit His human being and all of His human beings? How does Islam know the Will of Allah? Is it possible to understand Allah as a and The Heavenly Father, as in the Father of all things and beings?