How Jacob's Sabbath Boundary Won Him the World Without Measure

Abraham, in whom no observance of the Sabbath is written, inherited the world by measure, as it is said, "Arise, walk through the land" and so forth. Jacob, in whom observance of the Sabbath is written, "And he encamped before the city" (Genesis 33:18), entered with the dimming of the sun and fixed the Sabbath boundaries while it was still day, inherited the world without measure, as it is said, "And you shall break forth to the west and to the east and to the north and to the south" (Genesis 28:14).