Unfortunately, many people have been conditioned to think that conservatives regard things as being right and wrong because the Bible says they are; they're not 100% wrong, since there probably are some conservatives who see morality as coming from the Bible, but the reality of good and evil is much deeper. If something is wrong and the Bible says it is, it is not wrong because the Bible says it is; rather, the reason the Bible says it's wrong because it is.
People existed long before Moses transcribed the Ten Commandments. Right and wrong existed then, too.
YES!
Yes, as you mention -even the ancient residents of Ur knew right and wrong existed, hence the Code of Hammurabi.
Excellent post!