The Pharisees were so consumed with arcane debates over the law that they lost focus of what the law is meant to show. Generation after generation had missed the point that Moses so clearly explained to them in the Shema (Deut. 6:4-9); that God is one and that we ought to obey Him with every part of our being. Rather than helping them obey God's law from the heart, their customs had become a thick layer of dust which now covered Moses' tablets. Christ wants us to see that all law and all obedience must flow out of a love for God that consumes our hearts, our minds, and our strength. Love is defined by God, and not by man, and this means that love does not obliterate His law, but rather writes it on our hearts. The charge is simple - love the Lord your God with all your heart and with all your soul and with all your mind, that you may serve Him with all your might.