The feast of tabernacles consists of the whole life of the Gospel in the earth. That is why it says year to year.
The feast was a memorial for the travels in the wilderness. And this is fulfilled spiritually as Peter noted our pilgrimage.
1 Peter 2:11 KJV Dearly beloved, I beseech you as strangers and pilgrims, abstain from fleshly lusts, which war against the soul;
Paul said the same.
Ephesians 2:19 KJV Now therefore ye are no more strangers and foreigners, but fellowcitizens with the saints, and of the household of God;
Abraham looked for what we now have.
Hebrews 11:9-10 KJV By faith he sojourned in the land of promise, as in a strange country, dwelling in tabernacles with Isaac and Jacob, the heirs with him of the same promise: (10) For he looked for a city which hath foundations, whose builder and maker is God.
We have that heavenly city now. Many look for a physical city. The things that are seen are temporal, and it is the unseen things that are eternal and forever. So, if the Kingdom is eternal it cannot be visible or seen.
Hebrews 11:16 KJV But now they desire a better country, that is, an heavenly: wherefore God is not ashamed to be called their God: for he hath prepared for them a city.
We are in that heavenly city.
Hebrews 12:22 KJV But ye are come unto mount Sion, and unto the city of the living God, the heavenly Jerusalem, and to an innumerable company of angels,
We are already come there.
We are spiritually in the promised land. These feasts are a shadow of the body of Christ (
Col 2:16-17) and that keeping actual years and days and months is error. I really think it is a reversion to law-keeping, which will not occur either now or in our future (
Gal 4:10-11, 2 Cor 3:11,13), and these prophecies should not be naturalized.
My thoughts anyway.