Jews have been observing Passover for nearly 3,600 years, and for the past 1,800 years have been doing so with the help of the Haggadah, a guide book for the Seder meal, which, while focused on the exodus from Egypt, discusses the exodus in a rather oblique manner. Nevertheless, the Passover festival and the Seder meal and discussion of the Haggadah have contributed much to Israel’s survival throughout the ages.