The Messiah in His fist advent, perfectly fulfilled literal days on our Heavenly Father’s calendar..
He perfectly came at an appointed time. He was born at an appointed time, circumcised at an appointed time, dedicated in the temple at an appointed time, baptized at an appointed time, laid His life down at an appointed time, laid in the tomb at an appointed time and was raised, HalleluYah, at an appointed time. All of those are found in scripture in some form. Some take some study and guidance from Him.
Perfect spiritual fulfilment of what He taught Israel but also perfect, literal fulfilment,of the same appointed times He taught Israel..
New Moons, Sabbaths and Feasts. His appointed times..they were called moeds in His Word.. perfectly fulfilled by the Savior in His first advent. His major life events occurred on specific days that makes truly, The Word became flesh and dwelt among us..
His bride can know all of this and be prepared for what He hasn’t ‘fulfilled’ of those New Moons, Sabbaths or Feasts.
there will be people sleeping and not watching..
There are appointed times not yet ‘ fulfilled’ and scripture gives us hints as to what they are... Trumpets and Tabernacles..
And amazingly, He has written it in His sky well before He wrote it on parchment..
And a study of His sun, moon and stars gives us the amazing story that is marked when those Feasts were to be observed by Israel in the 1st and 7th months of His calendar..
It makes our worldly calendar and its holy days look like cheap counterfeits when one realizes the Messiah/Savior ‘s major events occurred on days He appointed as days for Worship..
The Christian and Jewish stories split apart with the inauguration of the church age. There is a lot of scripture that fits quite well with the scenario of a new merging of these stories in the future. This does not make gentile flavors of Christian worship invalid, unmeaningful, or even yet out of date. I hate to see the bigotry that errs to either side, either spiritualizing away the Jewish side of the Christian promise, or else venerating Jewish holy days as carrying a holiness that God cannot impart in some other fashion. We don’t have a Jewish section of heaven any more than we have a Baptist section. There is just one heaven.