Hammurabi, a great King of the Babylonians was a Great Lawgiver. Some of his laws were pretty humane and he set in place in Babylon a legal system with Judges, lawyers etc and some pretty advanced for its time, laws protecting women and children from abuse.
He claimed to have received his laws from the top of a mountain engraved in stone!
He claimed this 500 years before Moses did and to be honest, his laws were pretty much more humane, though still not overthrowing a life for a life, he was able to set in place compensation system which meant people of Babylon were not after eachothers lives anymore for misdemeanours but could claim compensation from the Courts. Far more civilised than the system the Jews lived under 500 years after him, especially since the Jews claimed their laws were from the Almighty God!
So! Is Moses claiming to have received his laws in stone tablets from the top of Mount Sinai, just copying this Great Lawgiver?