Thought: Morality based on what the human leader says may be good, but too often justifies his base interests (Islam’s changing views on adoption as family once Mohammed lusts for his adopted son’s wife). Morality based on a supreme power has greater backing, and you can’t disobey it when no one is watching because God always is.
Much of Christian(/Jewish)-type morality coincides with “natural law” for a very good reason I think. They knew for a long time the things that were detrimental and things that were positive. Codifying it into a single “law” probably took centuries/millenia of hard work by the Old Testament guys.
and it looks like all it takes to break down 6,000 years of progress is a few decades.