In the world to come the Holy One will make a grand banquet for the righteous from the flesh of the leviathan. Bava Bathra, fol. 75, col. 1. (See the Morning Service for the middle days of the Feast of Tabernacles.) God will make a banquet for the righteous on the day when He shows His mercy to the posterity of Isaac. After the meal the cup of blessing will be handed to Abraham, in order that he may pronounce the blessing, but he will plead excuse because he begat Ishmael. Then Isaac will be told to take the cup and speak