The law is not done away with. The law was not nailed to the cross. The 10 Commandments are still in existence today. In John 14:15 Jesus says: If you love Me, KEEP MY COMMANDMENTS! John 15:10 KEEP My commandments! Matthew 19:17 says: If you want to enter into life, keep the commandments. Rev 22:14: Blessed are those who do His commandments. Matt 5:17 teaches that Jesus did not do away with the law. Do not think that I come to destroy the Laws but fulfill the Law and in vs 18 Christ says Until heaven and earth pass away, not one jot or tittle will by no means pass from the law. Since the heavens and the earth are still hear according to scripture the law is still here. According to the covenant God made with Israel at Mount Sinai, the act of committing sin was what was taught. "Do not" In Matt 5:21-30, what Christ did was take the law to the next level. In these verses He said do not even think of committing adultery or murder, If the thought is in your heart then you are guilty of that sin. What Christ took away was the penalty of the sin. The slaughter or blood sacrifice was what was done away. If the law was done away, as you claim, then I guess it is alright to steal, rob, murder, lie with thy neighbor's wife, or bear false witness against thy neighbor, Right? If not, then the law is not done away with, and you teach a false doctrine.