Commento su Esodo 31:15

שבת שבתון denotes, reposeful rest and not rest of a casual character.

ששת ימים יעשה מלאכה, during the six days of the week which correspond to the days when G’d created the universe you can busy yourselves with working on the construction of the Tabernacle. There is no good reason why this project should override the commandments governing the Sabbath. The only time a commandment overrides such commandments is when the Torah linked the commandment which would override it to a specific time frame, such as the circumcision of a baby on the eighth day after its birth, or the type of sacrificial service in the Tabernacle of which the Torah said that it must be performed every day i.e. including on the Sabbath. Any other commandment that is capable of being performed on a day other than the Sabbath does not override the Sabbath.

ששת ימים יעשה מלאכה, "Six days work shall be done, etc." We neeed to examine why this verse which repeats legislation recorded previously had to be written at all. Besides, why does the Torah write יעשה (passive) instead of תעשה, the active form "you shall perform," as the Torah has written repeatedly? Furthermore, why did the Torah choose to describe the Sabbath as the "seventh day," instead of as "the Sabbath," which was the only way the Torah described this day up until now? Why did the Torah revert to describing the violator as כל העושה מלאכה ביום השבת מות יומת, instead of as כל העושה בו מלאכה, or כל העושה מלאכה ביום השביעי?