In the Sermon on the Mount, Jesus declared that He had come to fulfill, not to abolish the Old Testament Law given to Moses. Not only did His own life, ministry and death on the cross fulfill the Old Testament law, but His teaching completed what was understood with the Law. To understand that, Jesus gives six examples of the Old Testament Law and the fulfilling teaching in the Sermon on the Mount.
It is no surprise that the first example has to do with something we have all dealt with – anger. According to Jesus, the issue of anger is the foundation for the law, “You shall not murder.” In this way, the law of murder is much more profound than we have understood, as well as its implications for our daily life.