The Haggadah-reading ritual is a part of the Seder, a Jewish ritual meal that marks the beginning of the Passover holiday. The Haggadah is a book that contains the story of the Exodus from Egypt, prayers, and songs. During the Seder, the Haggadah is read aloud by the leader of the ceremony, and participants take turns reading passages. The Haggadah-reading ritual is an important part of the Seder, as it allows participants to remember the story of the Exodus and celebrate the freedom of the Jewish people.