Leviticus 23 contains the Big Picture of all the Jewish holidays ordained by G-d in the Torah. Sure, there were others that were instituted by individuals in remembrance of various important events (Purim, Hanukkah, etc.), but these 7 were G-d's design for our people to celebrate.
They are divided into three groups: year-long (shabbat), spring and fall.
Shabbat is designed to be a year-long remembrance of G-d's creating power in bringing the world into existance. So, too, the day after shabbat was taken by the believing community to remember that Messiah rose from the dead on that day.
The three spring holidays, Passover/Unleavened Bread, First Fruits and Shavuot, have an inclination towards the individual. Passover was celebrated by every family, who were to take a lamb for themselves. Unleavened Bread was to be celebrated in every house. First Fruits and Shavuot involved individual actions with respect to the harvest.
On all three, something remarkable happened in the life of Yeshua and the believing community. He offered himself as a sacrifice, rose from the dead, and then the Spirit of G-d came in a special way to live inside the new believers. The character of these spring holidays match that of his ministry on this world, it was a ministry where each individual must decide for himself or herself to place his trust upon Yeshua as Redeemer and Lord, to commit himself or herself to obedience to him.
On the other hand, you can search the account of Yeshua's life in vain for anything that happened in his life during the fall holidays (although, interestingly enough, there is a series of events connected with Hanukkah in John chapter 10). These holidays, Day of Trumpets, Yom Kippur and Sukkot, are quite different in tone than the spring holidays. The fall holidays are all national in scope, dealing with atonement and acceptance, not for individual families, but for the whole nation.
It is on that basis that the fall holidays most likely refer to the return of Yeshua, and to the solemn events described by the prophets Zechariah, Isaiah, Daniel and others. It is destined to be a fearful time when an end will be made to injustice and sin.
You have a choice. Place your trust on Yeshua's sacrifice and commit yourself to obedience to him now, or take the chance on judgment later.
Questions for further thought and discussion: