The Ten Commandments were given to Israel at Sinai. God Himself wrote the Law with His own finger into stone. Are those Laws immutable? Did they exist before Sinai? Did Adam and Eve and all the patriarchs prior to moses know the Law/ Was it that Israel, in captivity as slaves for 400 years in Egypt had simply forgotten the Law – especially the first four commandments? Are these Laws in force today?
When questioned no one really seems to get upset with the content of the Ten Commandments because they provide the basis for an ordered, law abiding society. Except of course most do take exception to the Fourth Commandment.