The commandments or rules of God upon which all blessings and punishments are based both in heaven and on earth. Those who obey the laws of God receive the promised blessings. The Prophet Joseph Smith taught that people should also obey, honor, and sustain the laws of the land (A of F 1:12).
The law of Moses was a preparatory law to bring men and women to Christ. It was a law of restrictions, prescriptions, and ordinances. Today the law of Christ, which fulfilled the law of Moses, is the fulness of the gospel or “the perfect law of liberty” (James 1:25).