***It was the feast, which was celebrated since Adams fall that is important,***
Does not compute. How did God institute feasts for Adam when he didn’t give them the LAW and commandments till Moses?
Deu 5:2 The LORD our God made a covenant with us in Horeb.
Deu 5:3 The LORD made not this covenant with our fathers, but with us, [even] us, who [are] all of us here alive this day.
Some folks reckon time differently...
The feasts were well prior to Torah (literally teaching, not law).
The feasts came immediately after the fall, and are for all time. They are our meeting times with Yehova.
The covenant began with Abraham. Prior to that we were all one people in sin.
Ask yourself..........who is Moses speaking to? He is speaking to the Children of the original Israelites who are all now dead [Numbers 14:26-35]. The dead Israelites were the ones who received the Law of Yahweh at Horeb (Sinai) [Exodus, chapters 20 through 24]......(our fathers).
Moses is now explaining the second covenant given to the Isarelites....and he's doing it 40 years later....on the Plains of Moab [Deuteronomy 1:1-5]
The second Covenant includes things like the Levitical Priesthood [Numbers 3:11-13] which was not part of the first....the blessings and the curses which also did not appear until the Law of Moses [Deuteronomy chapter 28]. These two Covenants given to Israel were not the same:
[Deuteronomy 29:1] These are the words of the covenant, which the LORD commanded Moses to make with the children of Israel in the land of Moab, beside the covenant which he made with them in Horeb.
It is lack of knowledge that causes much confusion when discerning scripture. The reason you are not aware of this is because the Church has never taught it. If they were to teach this doctrine then people would logically ask...."Then the Law of Yahweh" ....the Ten Commandments were not part of the "Law of Moses"? And you would then reply......,"Yes, that's correct....and the Law of Moses with its sacrifices and regulations was changed [Hebrews 7:11-12].....but the Law of Yahweh with its fourth commandment....still stands!"
[Hebrews 10:4] For it is not possible that the blood of bulls and of goats should take away sins.