Final answer:
The festival of Passover commemorates the biblical story of the Israelites' liberation from slavery in Egypt. It is observed through a ritual meal called a seder, where the story of the Exodus is narrated and symbolic foods are eaten.
Step-by-step explanation:
The festival of Passover commemorates the biblical story of the Israelites' liberation from slavery in Egypt, as described in the book of Exodus in the Jewish Bible. The holiday is observed through a ritual meal called a seder, where the story of the Exodus is narrated, symbolic foods are eaten, and prayers are recited. Passover is a time for Jews to reflect on their ancestors' journey to freedom and to commemorate their deliverance from oppression.