 ..as the Lord your God "commanded" you” (in which Moses used the past tense for the word “commanded,” indicating that God had commanded the Israelites to observe the Sabbath before the revelation at Mount Sinai) indicate that God commanded the Israelites to observe the 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