In contemplating the aspects of Aristotle's Prime Mover, I have been trying to determine what we can know. The first is the obvious conclusion that it is not a composite because a composite is made up of something else which is the material cause of that thing. Since the Prime Mover can have no cause, it cannot be a composite. I quickly realized that pondering just the nature of the Prime Mover itself would get me no where. I had to ask if the Primer Mover could have specific attributes.
Can the Primer Mover have emotions? Emotions are responses to stimulus. We become angry because of some external cause. Something external to us causes our joy and our happiness. So that Prime Mover must be emotionless.
Can the Prime Mover be the Christian God? The Christian God is claimed to be a Trinity, a composite of three beings in one. Since the Prime Mover is not a composite, such a thing could not be possible. However, there is the possibility of multiple Prime Movers, each responsible for a different causal chain. If the three beings in God are separate and distinct Prime Movers, this could be possible with the three acting together as a composite called God. However, neither of the three could become or change into a human. A human is a composite and a Prime Mover is not a composite.