If you notice, the moral law in the other legal codes separates people (the Laws of Manu, the caste system, the Code of Hammurabi with the slave/owner distinction). In Islam, the violator is inferior to the obedient one. By contrast, in the Hebrew-Christian tradition, the law unifies people. No one is made righteous before God by keeping the law. It is only following redemption that we can truly understand the moral law for what it is---a mirror that indicts and calls the heart to seek God's help. This makes moral reasoning the fruit of spiritual understanding and not the cause of it.
Ravi Zacharias, The Grand Weaver: How God Shapes Us Through the Events of Our Lives
law, moral-law, morality, redemption, unity