Today's focus in eschatology is on one of the subgroups, the Holy Day fulfillment. I assure you, anything I have to say on this subject is so minuscule to what is available to support it, that I am almost not worth the read. That said, I do hope that I can shed some light or summarize on this idea for you.
To begin I would encourage you to read my series on the Biblical Feasts, as they will give you the foundation for understanding what the seven feasts of God are in more depth.
Passover, the day that an angel of Adonai (Perhaps The Angel of Adonai, Yeshua) went through Egypt claiming the life of every first born male which was not protected by the blood of the lamb on their doorposts. Then memorialized as the day that a lamb was to be slaughtered as a sign of forgiveness for God's people. Ultimately this day was given it's full due when the Messiah himself shed his blood to pay the price for our sins, the blood of the ultimate Lamb to keep us from the final death. The event that gave this day it's full meaning, landing precisely on the same day as the Holy Day had been commanded by Elohim to be celebrated.
Unleavened Bread, the seven days following the proper day of the Passover. The time in which no yeast/leaven was to be found in the homes of believers, a symbol later explained in scripture as in reference to how our homes are to be found without sin (breaking one of God's unchanging Laws). This was given it's full depth when on those exact days we saw the Messiah's body laid to rest, his sacrifice paid, and the consequence for sins committed by his followers forever separated from them, paid for and dismissed.
First Fruits. This day is so vital to the faith of the followers of the Messiah. But the fact is that the Messiah has been raised from the dead, the firstfruits of those who have died. For since death came through a man, also the resurrection of the dead has come through a man. For just as in connection with Adam all die, so in connection with the Messiah will all be made alive. But each in his own order: the Messiah is the firstfruits; then those who belong to the Messiah, at the time of his coming; then the culmination, when he hands over the Kingdom to God the Father, after having put an end to every rulership, yes to every authority and power. (1 Corinthians 15:53) Need I say much more? On the day of waving the first fruits offering we were given the ultimate one, Y'shua himself raised from the grave!
Then of course Shavuot. The day that Elohim granted Moshe the formally recorded commandments, giving us no excuse to no longer feign innocence to sin or to fall away. This is the very same day, many years later, in which the Apsotles of the Messiah where gathered to celebrate in an upper room, where tongues of fire came down and each was granted the Ruach HaKodesh (Holy Spirit) in a way that had not been done before, to keep full with Him. The day we were given the Law, the Torah, is the same day we were given the Spirit, our Helper from God to help lead us in obedience to the Torah.
But then we get into something odd. While churchianity has commonly dismisses all seven of the Holy Days for fear they are 'too Jewish' or under the guise of 'they have been fulfilled', we get to the final three - the Fall Feasts - which have not yet been fulfilled physically.
We start with an exciting one, well they all are but I'm sure you will get my meaning. Yom Teruah, the Day of Trumpets. Scripture doesn't give us much directly about this day, but the meaning is there when we allow scripture to interpret scripture. The Torah tells us that on this day we are to celebrate with the blowing of trumpets, and what does scripture say will return to the sound of the trumpets? Matthew 24, 1 Thessalonians 4, Revelation... all directly telling us it will be to the sound of a great trumpet or many trumpets that the Messiah will return in the sky! What a better day to do this than the day in which His people are to be blowing them? What better day to do it than the day He himself specified when he said that no man knows the day or the hour? An idiom used for Yom Teruah as it relies on us all going out to try and sight the moon? A day when we are all to go out and look for him with trumpets? To add a cherry on top, I would present to you that this is also the day of his First coming, the day that he was born.
From this point we have the ten days until Yom Kippur, commonly called the Ten Days of Awe. I would pose the argument for your research that these ten days are to show the value of ten biblically, completion, and that this is the time in which Y'shua will remove all worldly powers and set things right. This is then followed by Yom Kippur, directly called the Day of Atonement. This is biblically a day in which instead of a feast and celebration we mourn. We mourn for all those who are not saved, who will face the wrath of God when we stand before His judgement. Historically this was the day that the red heifer was sacrificed in the temple for the large sin offering, I believe this respresents how the Messiah, our only atonement, will stand before the Father and show who has received forgiveness from His atonement on us. This is a day we mourn to encourage us to go out and fish for men, those we love and those we try or should be trying to love - all the men, women and children that Elohim loves. This is a day I respectfully fear, the day I will stand before my beloved Adonai and either hear "Well done, good and faithful servant" or the dreaded "Depart for I never knew you, you who practice lawlessness."
Then we have Sukkot. Beautiful sukkot in which we remember how Israel wandered in the dessert for forty years living in temporary housing. Seven days which we are to celebrate and live in temporary housing, many in North America going camping. Seven days where people don't let division effect them but all show their love for God. One division on this day is the discussion on if Sukkot symbolizes the millennial kingdom, the thousand years in which Y'shua will be reigning with us here on earth as this his temporary home. Or if this is more meant to symbolize the marriage supper of the lamb, as that too is to last seven days according to wedding traditions from the time of Y'shua. It could be either, it could be both. I don't have that answer but as I celebrate every year I look to both events and the joy they will be for those who are with Y'shua.
Now for the trick finale. There are seven Holy Days, and yet there are also eight. Some may even say there are nine. Like Passover is often used as a term for the overlap of Passover, Unleavened Bread and First Fruits Sukkot has a friend with it as well, the Eighth Day. This a day at the tail end, immediately following Sukkot which is stated as seven days. This is scripturally one of the Holiest days in the bible, and revered as a special sabbath. Tradition has marked this as the day of the new, the day we begin a new torah portion cycle and celebrate all Elohim has given us. Perhaps this a day to celebrate the largest of the new? The time of which we will be given a new heavens and a new earth and be able to see God's creation as it was truly meant to be, for all eternity?
As to what nine may be, that will have to wait for the next piece, the Millennial Week theory. I do hope this brief introduction helps you to see the importance of the Feast Days that Elohim ordained for those who follow him, no matter their birth. And if he gave the complete show of what the first four mean, should we not be watching, keeping our lamps full with oil, for those last days to come as well when he told us things would happen?
Blessed is He who comes in the name of the Lord.