When Jesus said in the Sermon on the Mount that He did NOT come to abolish the Law, He meant that He came to be the one person to do what no one else had done which was to fulfill it. Once it was fulfilled, then it was taken out of the way. Once fulfilled, it accomplished it’s purpose and was removed by God. Jesus could have stepped into the world and could have declared the Law abolished. But instead Jesus lived it and kept it perfectly that He might be the first to do so. By fulfilling the Law, He finished His ministry on the Cross, and paved the way for men to be made righteous – as the Law demanded – by putting their faith in the one who kept the Law perfectly.