I am not the best person to answer this. The old testament is the old covenant between God and mankind. When Jesus came to die for the word that is when the new covenant was started. Rules changed and that is the quick answer to why the rules are not taken literally.

I am sensing you are not a christian or religious. You will not get what was said above or until you have a change of heart.

As far as the ten commandments. That was a different story. Those are things that everyone can live up too. Not like stoning someone that woks on the sabbath, etc. Also God says something about trusting the ones that are put in charge and in government. With that said some of the stoning laws would easily break some of the other laws that we have today.

As far as you thinking that public building displaying the ten commandments on a sides of them. I cannot argue with them. This is an argueable instance. We as the USA was started on a christian background from the fore fathers and founders of this country. That is why they are still up. We may have reached a point that it is not longer acceptable to display those in our countries public buildings.

As far as you trying to make a point your argument is not valid. It is considered a red haring. You are trying to bring light to something that is not on the topic of whether or not the ten commandments should be posted in public buildings.

Here is an argument that would be vaild.

Christians believe that they can leave parts out of the old testament because of unruly kids, or someone picking up sticks on the sabbath should be stoned to death. Or a victim should marry a rapist, slavery, or eating bacon or lobster is punishable by death.... but they keep the ten commandments. why is this?

I am not sure how to answer this question. I gave it my best opinion. I don't mean for this to be angry if you are reading this. I am just giving you my own knowledge. I don't represent any church or religious group as a whole. I hope this gives you some answers that you are looking for.