People Empire vs. Jesus Empire

I am reading a book right now called A Peculiar People: The Church As Culture in a Post-Christian Society, by Rodney Clapp. In Ch. 3 Clapp makes the claim that the Church is as real and definable as America, or any other nation. He does this by pointing out how we use maps to establish borders, but that this is really a political weapon. He gives a brief synopsis of how the Oklahoma Panhandle became part of America. I will give you a more brief one. No one should own it according to an agreement signed by Mexico and the U.S. goverment. So we started making it part of Oklahoma on maps, and now no one disputes it. Basically what I take that to mean is Mexico is not big enough to fight for it anymore. Which leads me to my question.

What is the difference between church and state? If as Clapp says the Church is as real, but seperate from, nations on maps, what is the difference? Church in this question is refering to the Universal Church outside of physical location or time frame. Meaning everybody from Peter, Paul and Mary to this current generation.

As I see it only three things seem to be different. The Church should be nonviolent/noncoercive, The Church should be concerned about body and soul. The Church should function out of a sense of compassion towards the world. I say should because we have not always, or currently always, act/function this way.

I can only judge from my understanding of how other denominations and sects of christianity function,compared to my own, but we all seem to mostly function like the government. What I mean is we seem to set up our denominations/sects (from here own out denomination also includes all nonprotestant sects too.) in a governmental type hiearchy. Which then leads to a system based off worldly concepts of power. Those at the top want to stay there, and become motivated by this. Those below are motivated by a need to keep an income. (It seems.)

You can't say The Church is different than The State, because of things it does. They both take care of people. They both build things to help society. They both collect money to do these things. They both establish laws and critiria to define who is or is not, and to judge the peoples rightness.

What I do see is that The State will use violence to protect it's people, and gain territory. While The Church doesn't normally do this, and should never. A nation will use it's laws to force you to do what it wants. You won't go to jail for not paying your tithes. While The Church doesn't normally use physical force, I will admit psychological abuse/coercion is quite common. i.e. excommunication to "those looks". The State ,while concerned with it's people in the here and now, does not have any reason to be concerned with your soul or it's eternal statis. The Church should be concerned with both, and working to improve, heal and save both. The last difference really comes down to motivation. As I stated earlier The Church should be motivated, as Christ was, out of compassion for the world. While a country is motivated out of what is best for it's survival and growth.

Maybe I have missed some difference(s)? Also as I have tried to make clear this is how The Body of Christ should be different, and not how we always are. For that I ask forgiveness of all my pagan friends:) Most of the times we The Seed of Abraham meant to bless the world have failed is because we have allied ourself with the wrong king or president. We are called to be the light, not to hold hands and pat each other on the back.