Perhaps the fact that the OT was written to a people who, although were God's chosen people, were not ready for the teachings of Christ. They were taught the letter of the law but not the spirit of the law. That may explain a bit.
I certainly would not expect an atheist to understand the diff.
20000 posts later and I'm afraid that some people here went from the glass is half full to the glass is half empty.
Never interested in filling the glass.
Christianity is based on the fact that witnesses [of Jesus] believed Jesus as God in the flesh. That HE started HIS church and his church has fruits which the world had never know before.
Education for all. Slave and master alike.
Food for all, help for all orphans and all widows.
Respect for all life - young, old and not even born yet.
These are reasons why Christianity is true and atheism is false and never gave anything good to the people of the world.
Think about it. Love your enemy?
It is crazy, but somehow it has made the world a better place, because if you can love your enemy, then anything truly is possible.
The Truth Will Set You Free.