It should be noted that the God of the Old Testament states that his law is eternal and unchangeable.
For example, one of the commandments in Exodus is to remember the Sabbath and keep it holy. Numbers 15:32-36 states that violating the Sabbath warrants death. Matthew 12:1-8 Jesus violates the Sabbath by picking the grain. John 9:14 and 16 he violates the Sabbath again. Matthew 12:9-13 He violates the Sabbath by healing man's arm who was not in danger of losing his life.