On the day after Moses descended from Mount Sinai with the Second Tablets, after successfully securing atonement for the sin of the Golden Calf, he gathered all the Jewish people. The primary purpose of this assembly was to inform the Jews of G‑d's desire for a Sanctuary to be constructed. He began, however, with a brief reminder regarding the observance of the Shabbat. This was followed by a description of the materials needed to construct the Tabernacle, and a list of the vessels, Tabernacle parts, and priestly garments which were to be produced.