Biblically the feasts of Jesus Christ our Lord fall outside of the covenants. The old covenant was agreed to by the Israelites at Mount Sinai. Yet the feasts of the Lord, including the weekly sabbath, had apparently already been introduced to Israel by God himself long before they made the old covenant:
Exo 5:1 Afterward Moses and Aaron went in and told Pharaoh, "Thus says the LORD God of Israel: 'Let My people go, that they may hold a feast to Me in the wilderness.'
So they knew that God wanted them to observe a feast BEFORE the old covenant was struck.
Exo 12:17 So you shall observe the Feast of Unleavened Bread, for on this same day I will have brought your armies out of the land of Egypt. Therefore you shall observe this day throughout your generations as an everlasting ordinance.
Exo 12:18 In the first month, on the fourteenth day of the month at evening, you shall eat unleavened bread, until the twenty-first day of the month at evening.
Exo 12:19 For seven days no leaven shall be found in your houses, since whoever eats what is leavened, that same person shall be cut off from the congregation of Israel, whether he is a stranger or a native of the land.
Again this was given BEFORE the old covenant was instituted. These are the feasts of Passover and Unleavened Bread. The festivals of our Lord Jesus fall outside of the covenants.
Further evidence of this is Zechariah:
Zec 14:16 And it shall come to pass that everyone who is left of all the nations which came against Jerusalem shall go up from year to year to worship the King, the LORD of hosts, and to keep the Feast of Tabernacles.
Zec 14:17 And it shall be that whichever of the families of the earth do not come up to Jerusalem to worship the King, the LORD of hosts, on them there will be no rain.
Zec 14:18 If the family of Egypt will not come up and enter in, they shall have no rain; they shall receive the plague with which the LORD strikes the nations who do not come up to keep the Feast of Tabernacles.
Zec 14:19 This shall be the punishment of Egypt and the punishment of all the nations that do not come up to keep the Feast of Tabernacles.
In the future, after Christ returns, note that it's STILL a condition of worship of Jesus Christ that his followers observe his holy days.
The books of Hebrews notes many changes in the administration of the new covenant and old covenant, but changing or banning the Holy days of Jesus Christ is not among them. Biblically at least.
You nailed it. The Feasts and Sabbaths of The Lord were never part of the Old Covenant and not only predated Sinai.... I believe they predated the Egyptian Captivity. More importantly.....we are never told to discontinue their observance...........anywhere in the new scriptures.
Great article....... Douglas! Thanks.