Book excerpt: The Passover haggadah enjoys an unrivaled place in Jewish culture, both religious and secular. And of all the classic Jewish books, the haggadah is the one most "alive" today. Jews continue to rewrite, revise, and add to its text, recasting it so that it remains relevant to their lives. In this new volume in the JPS Commentary collection, Joseph Tabory, one of the world's leading authorities on the history of the haggadah, traces the development of the seder and the haggadah through the ages. The book features an extended introduction by Tabory, the classic Hebrew haggadah text side by side with its English translation, and Tabory's clear and insightful critical-historical commentary.