The old covenant is a beautiful covenant. However it was created not for the individual but it was created for the purpose of nationhood on this earth under God. It is a national covenant. This is why God didn’t give the old national covenant to Enoch, Noah, Abraham, Isaac, or Jacob. With them He made covenants but they were between God and the individual. To properly keep the old national covenant with all its Sabbaths, feasts, and ordinances etc… one must sever all physical and legal ties to their citizenry by birth or by vow or by forced servitude (a perpetually indentured population is what we have in place today).
This is what God had to do for the children of Israel before He gave them this magnificent national covenant through Moses: God had to sever all physical and legal ties to their Egyptian citizenry by birth or by vow or by forced servitude. And of course we all know what God had to do to accomplish that severing which culminated in the parting of the Sea and the destruction of the military of a nation that laid legal claim to its enslaved population.
There is nothing wrong with people who want to incorporate certain observances from this wonderful national covenant into their walk with God. But they need to understand that this national covenant for Israel was not created for the individual who has physical and legal ties to their current citizenry by birth or by vow or by forced servitude. And the purpose of Christ’s sacrifice was not to sever those legal ties so that the individual could select certain observances contained in the national covenant up until the point just before violating any laws of their citizenry by birth or by vow.
What this means is that people who decide to keep this national covenant to honor God must understand that they can never keep it properly. They can never keep it as it was originally intended because it was not intended for the individual under legal bondage to their citizenry by birth but it was intended for an entire nation of people free from all legal ties and obligations to their citizenry by birth or vow.
Christ did not allow Himself to be slowly tortured to death so that individuals wouldn’t be condemned for not keeping certain ordinance that were contained in a national covenant that were violating any laws of their citizenry by birth or by vow. Christ’s sacrifice was not for the purpose of enabling individuals to fulfill all the requirements of the national covenant with Israel while only observing certain ordinances that were in agreement with the authorities of their nation by birth or by vow.
If this were so why didn’t God just do that in the first place? Why didn’t He just allow the children of Israel to remain under the Egyptian authorities, send His Son as a sacrifice, then through Moses give them the national covenant but allow individuals to observe only the ordinances of this national covenant that were permissible by the Pharaoh?
This is why we have a new covenant: a better covenant because it’s a spiritual covenant… those under it worship God purely in spirit and truth. By spirit meaning our service to God is invisible bearing the visible fruits of the Spirit unlike the visible service under the old national covenant. And it’s done in truth from a pure and sincere heart. And this covenant, unlike the old national covenant, can be fully kept under its light yoke no matter what conditions the individual is under whether slave or free.