Lets see if this helps.
I am the Lord your God
You shall have no other gods before me
You shall not make for yourself an idol
Do not take the name of the Lord in vain
Remember the Sabbath and keep it holy
Honor your father and mother
You shall not kill/murder†
You shall not commit adultery
You shall not steal††
You shall not bear false witness against your neighbor
You shall not covet‡ your neighbor's wife
You shall not covet‡ anything that belongs to your neighbor
Taken from here
http://en.wikipedia.org/wiki/Ten_Commandments where it really explanes this:Sroll down to here.
Division according to different religions
Here are the ones that are civil: even today.
You shall not kill/murder†
You shall not steal††
You shall not bear false witness against your neighbor
The rest keep us out of trouble and they have to do with belief and faith of what is good.
This is what you are using against Christians to get your point across, and anyone can see that from the basics of these just like us today, they the Hebrews, added to them just as we have, to cover all morality, in the culture of the times which should in theory and what is written become better.
I think it has except the acknowledgment by non-believers.
The basics had more to do with what God wants for us, which is where the most addendums are...that you have a problem with, especially.
Punishment or reward comes from men and God.
Men uphold three of them and God upholds all of them.
But if you are a believer then the basics make perfect sense.