Sumerian sa-bat ("mid-rest"), rendered in Akkadian as um nuh libbi ("day of mid-repose"). Connection to Sabbath observance has been suggested in the designation of the seventh, fourteenth, nineteenth, twenty-first and twenty-eight days of a lunar month in an Assyrian religious calendar as a 'holy day', also called 'evil days' (meaning "unsuitable" for prohibited activities). The prohibitions on these days, spaced seven days apart (except the nineteenth), include abstaining from chariot riding, and the avoidance of eating meat by the King. On these days officials were prohibited from various activities and common men were forbidden to "make a wish", and at least the 28th was known as a "rest-day". The Universal Jewish Encyclopedia advanced a theory of Assyriologists like Friedrich Delitzsch (and of Marcello Craveri) that Shabbat originally arose from the lunar cycle in the Babylonian calendar containing four weeks ending in a Sabbath, plus one or two additional unreckoned days per month. The difficulties of this theory include reconciling the differences between an unbroken week and a lunar week, and explaining the absence of texts naming the lunar week as Sabbath in any language. Egypt Seventh-day Shabbat did not originate with the Egyptians, to whom it was unknown; and other origin theories based on the day of Saturn, or on the planets generally, have also been abandoned. Hebrew Bible Sabbath is given special status as a holy day at the very beginning of the Torah in Genesis 2:1-3. It is first commanded after The Exodus from Egypt, in Exodus 16:26 (relating to the cessation of manna) and in Exodus 16:29 (relating to the distance one may travel by foot on the Sabbath), as also in Exodus 20:8-11 (as one of the Ten Commandments). Sabbath is commanded and commended many more times in the Torah and Tanakh; double the normal number of animal sacrifices are to be offered on the day. Sabbath is also described by the prophets Isaiah, Jeremiah, Ezekiel, Hosea, Amos, and Nehemiah. The longstanding Jewish position is that unbroken seventh-day Shabbat originated among the Jewish people, as their first and most sacred institution. The origins of Shabbat and a seven-day week are not clear to scholars; the Mosaic tradition claims an origin from the Genesis creation narrative. The first non-Biblical reference to Sabbath is in an ostracon found in excavations at Mesad Hashavyahu, which has been dated to approximately 630 BCE. Status as a Jewish holy day The