Well, you are likely aware that Passover celebrates the departure (exodus) of the Jewish Nation from Egypt after about 400 years of living in Egypt, most of that time in slavery.
If you are rusty on those events, check out the Biblical account in Exodus 12. HERE'S THE LINK
The Holiday / Feast activities and celebrations observed today are not only reminders of that past event but
they are also types / prophetic pictures pointing to future events.
For example -- The Jewish Seder Supper is observed at Passover --
And there are many things eaten during this Seder, each with significant symbolism.
Two of these 'special things' are the Afikomen and the Zeroa.
What are they? And why are these important to both Jews and Christians?
HERE'S THE LINK that explains about the Afikomen and the Zeroa
