Throughout the life of Christ we see a wide variety of teachings that for the most part countered the sentiments and standards that were previously in place. But his actions did not negate the old testament but rather fulfilled them. I commonly come across men and women who in justifying their reasons for why something took place in the Old Testament they say in a somewhat deragatory manner "...yeah but that was the Old Testament". I fear that we may find ourselves in danger of misunderstanding the Law, the prophets, and the entire purpose of the old laws.
The summation of the Old Testament and Gods law is found in Christ's words to a local lawyer who had entreated Jesus to provide the law which was the greatest and foremost. "