“One who delights the Shabbat is given an unbounded domain, as it is said, ‘Then shalt thou delight thyself in the Lord, and I will make thee to ride upon the high places of the earth, and I will feed thee with the heritage of Jacob thy father,’ etc.. Unlike Abraham, about whom it is written, ‘Arise, walk through the land in the length of it,’ etc.. And not as Isaac, as it is written, ‘for unto thee and unto thy seed I will give all these lands,’ but as Jacob, about whom it is written, ‘and thou shalt spread abroad to the west, and to the east, and to the north, and to the south’” (Shabbat, 118)...