The Origins of the Seder says: “The Bible includes extensive discussions of Passover and the Festival of the Unleavened Bread; however, these descriptions do not correspond with later observances of the holiday.
Raamatus The Origins of the Seder (Sederi algupära) on öeldud: „Piiblis on paasapüha ja hapnemata leibade püha ulatuslikult käsitletud; kuid need kirjeldused ei vasta selle püha hilisemale pidamisele.