Christopher Wright, in the New Bible Commentary, on the 19th chapter of Leviticus:
The chapter is remarkable for its breadth and depth of moral insight. It touches on the thoughts of the heart and the actions of the body, private and public behavior, and almost every major area of social life in a community. The application of some of its legislation would transform the lives of millions in today’s world. And the deeper one reflects on it, the more it seems that many Christians come nowhere near the standards it presented centuries before Christ (let alone Christ’s own development of it in the Sermon on the Mount).
Far too often in the Christian community, the Old Testament law in general, and Leviticus in particular, is dismissed much too quickly as irrelevant (that OT law doesn’t apply to us anymore, right?), impenetrable (how do you make sense of the maze of priestly codes and types of offerings?), and simply, sometimes humorously, random (regulations regarding mildew? commandments regarding the mixing of fabrics?).
Perhaps the best argument against this assumption is simply to get people to read the 19th chapter of Leviticus, which is rich, relevant and wise. Are all the laws found there immediately clear in their purpose and relevance to us today? Of course not. But this chapter is also remarkably clear, and should function as a sign to us that this book is not just some dusty collection of confusing and confused prohibitions. Rather it rewards study, and upon such, (like the rest of the book) shows itself to have both an inner logic, and a theological and social richness that is extraordinary.
That may seem like an overstatement. Yes, big chunks of Leviticus are slow reading and often dry. But if we push through, this ancient culture and more importantly it’s astonishing God, is still there to be found. He is still speaking.
Jesus’ testimony about the law should have pointed us in this direction. Indeed, as Wright notes, Leviticus 19 stands as a clear source behind the Sermon on the Mount. But Moses’ words as well should give pause to any of us who want too quickly to dismiss the law on our way to other things. Moses’ words on the law in Deuteronomy 4:6 – 8 point to it’s wisdom and utter uniqueness:
Observe them [the decrees and laws] carefully, for this will show your wisdom and understanding to the nations, who will hear about all these decrees and say, ‘Surely this great nation is a wise and understanding people.’ What other nation is so great as to have their gods near them the way the LORD our God is near us whenever we pray to him? And what other nation is so great as to have such righteous decrees and laws as this body of laws I am setting before you today?