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On the first of Shevat in the year 2488 from creation, Moshe convened the Jewish people and began the repetition and review of the Torah – “Mishne Torah”. In his commentary Rashi points out that Moshe Rabbeinu explained the Torah in 70 languages.
The “review of the Torah” continued for 37 days and is contained in the Book of “Devarim” (“Deuteronomy”). It was concluded on the 7 of Adar 2488, when Moshe Rabbeinu ascended Mount Nebo.