God gave to Israel three annual holy days wherein all males of the land were called to the place where God established His name: Passover, First Fruits, and Tabernacles. Also given was the solemn national day of Atonement for remembrance of sins. Many other observances were commanded to be kept. All of which foreshadowed the reality of blessings through the Messiah.
Gentiles have dragged their old pagan rituals onto the scene and have tried to marry them to Christ. So we have Easter, Christmas, etc. Many are making plans to sacrifice animals again “as a reminder” of what the Messiah did for the world. What in the world have we been doing? What blasphemy!
Ye observe days, and months, and times, and years. I am afraid of you, lest I have bestowed upon you labour in vain. (Galatians 4:10-11)
On the other hand, our Jewish neighbors are still holding on to the a shadow of a shadow; Passovers that cannot be kept, Atonements that cannot be fulfilled because the Temple is gone, the priesthood is not, and there is no Urim & Thummim through which to consult.
The true Passover has come for Jews and Gentiles alike; release from the captivity of sin through the Lamb of God. The First Fruits has ascended to the Right Hand of the Father, and many now live. We wait for the final harvest and celebration of a wilderness journey which will be in the past.