The Book of the Covenant and the Book of the Law are two different books. The first was the Answer to the Promise Covenant made in Genesis 15. The other was imposed because Israel broke the Covenant. It was meant to be temporary and was prescriptive law until Yahshua. After his death and resurrection Yahshua was made the High Priest of h Father's Royal Priesthood, the Melchizedek Priesthood. A change in Priests equals a change in Law. Yahshua restored the original Melchizedek Priesthood, its Covenant, its Law and its issues. This is the Royal Priesthood that we are all being called into. Entrance into this New Covenant is 'circumcision of the heart' there is no entry into it without it. These priests will be keeping the Melchizedek Mo'edim (the Appointments or Feasts. We are to have the mind of the Messiah, not a Levitical or Rabbinic mindset.