Christians believe that God is three in one: the father, the son and the holy spirit. It is often very hard to come to grips with this for both Christians and non-Christians. I may have come up with a solution to this dillema with a theory of mine (sorry if this sounds smug; I don't mean it to be and it is also possible I am not the first person to come up with this idea). My theory is this: the father is representative as the mind, the son is representative as the body and the holy spirit is representative as the spirit.
Humans are the same way; we are split into three beings: mind, body and spirit. Each serves a different purpose for the whole.
The mind is the decision making entity. It is logical and can come up with solutions to any problem or obstacle encountered. The spirit is the moral entity that advises the mind when something illegitimate surfaces. Often when it comes to the choice between a morally bad action and a morally good action. This causes a lot of stress for individuals and more often than not we choose to follow our minds rather than our spirits.
The most important thing to remember about the spirit is that it is an imprint of God. Therefore it contains all the knowledge of the universe. And yet it remains the most underdeveloped entity in the common individual... But I digress.
The body is not just a shell, it is another separate entity completing the trinity. I can't recall how many times my body has acted out of instinct instead of relying on the mind or spirit to guide it.
I'll give you an example, as a child I grew up taking martial arts. I was sparring a black belt who prided himself on his agility and crazy attacks and maneuvers. Being slightly overweight and not as agile, I didn't stand a chance. But at one point I sort of blacked out and came back to see he was lying on the ground. Apparently he did a jumping attack and landed on my outstretched fist. I honestly don't remember doing it; it just happened.
That would be a prime example of how the body is a separate entity along with the mind and spirit and also how it has its own thoughts like them.
God is one and three, just as we are all one and three. He created us all in His image... meaning an interpretation of His true self in a sensible form.
I've never been great at academic writing, so please comment and we can make this a conversation. I hope to hear from you.