Sabbath when they were at Marah, about which reports, “There He made for them a statute and an ordinance.” The Tanna Devei Eliyahu taught that if you live by the commandment establishing the Sabbath (in (20:8 in the NJPS) and (5:12 in the NJPS)), then (in the words of ) "The Lord has sworn by His right hand, and by the arm of His strength: ‘Surely I will no more give your corn to be food for your enemies." If, however, you transgress the commandment, then it will be as in , when "the Lord’s anger was kindled in that day, and He swore, saying: ‘Surely none of the men . . . shall see the land.’" A Midrash asked to which commandment refers when it says, "For if you shall diligently keep all this commandment that I command you, to do it, to love the Lord your God, to walk in all His ways, and to cleave to Him, then will the Lord drive out all these nations from before you, and you shall dispossess nations greater and mightier than yourselves." Rabbi Levi said that "this commandment" refers to the recitation of the Shema (), but the Rabbis said that it refers to the Sabbath, which is equal to all the precepts of the Torah. The Alphabet of Rabbi Akiva taught that when God was giving Israel the Torah, God told them that if they accepted the Torah and observed God's commandments, then God would give them for eternity a most precious thing that God possessed — the World To Come. When Israel asked to see in this world an example of the World To Come, God replied that the Sabbath is an example of the World To Come. A Midrash cited the words of (5:14 in the NJPS), "And your stranger who is within your gates," to show God's injunction to welcome the stranger. The Midrash compared the admonition in , "Neither let the alien who has joined himself to the Lord speak, saying: ‘The Lord will surely separate me from his people.’" (Isaiah enjoined Israelites to treat the convert the same as a native Israelite.) Similarly, the Midrash quoted , in which Job said, "The stranger did not lodge in the street" (that is, none were denied hospitality), to show that God disqualifies no creature, but receives all; the city gates were open all the time and