The motivation for God’s people to live by God’s law is ultimately to bless the nations. After all, what would the nations actually see? The nearness of God is by definition invisible. What, then, would be visible? Only the practical evidence of the kind of society that was built on God’s righteous laws. There is a vital link between the invisible religious claims of the people of God (that God is near them when they pray) and their very visible practical social ethic. The world will be interested in the first only when it sees the second. Or conversely the world will see no reason to pay any attention to our claims about our invisible God, however much we boast of His alleged nearness to us in prayer, if it sees no difference between the lives of those who make such claims and those who don’t.
Christopher J. H. Wright
The Mission Of God – pg. 380