from the sky map, and new constellations were added to better align with the seasons. As early as 1811, modern researchers were examining evidence for knowledge of precession of the equinoxes and astrological ages before Hipparchus. Sir William Drummond published Oedipus Judaicus: Allegory in the Old Testament in 1811. Drummond expounds on his hypothesis that a greater part of the Hebrew Scriptures are merely allegorical writings that hide the true content. Furthermore, the Orientalists were mainly concerned with astronomy and most of their ancient myths are really disguised astronomical records. Drummond believed that the 49th chapter of Genesis contains prophecies allied to astronomy and that the twelve tribes of Israel represented the 12 zodiacal signs. Drummond makes his case that at the time of Abraham, the Amorites first recorded the shift from the Age of Taurus to the Age of Aries as represented by the year commencing with the Ram (Aries) rather than the bull (Taurus). The Book of Joshua indicates that by the time of Moses the equinoxes had already shifted from Taurus to Aries, as Moses had ordained that the civil year should commence with the month of Nisan (Aries) rather than the month of Taurus. The feast of the Passover is probably a celebration of the Age of Aries with the Paschal Lamb representative of Aries, traditionally associated with the symbol of the ram or sheep. Drummond also hypothesizes that most number references in ancient texts were coded to hide their real value by multiples of 1,000. For example, in the Old Testament Joshua commanded 30,000 men, and he slew 12,000 inhabitants of the city of Ai. The historian Berosus stated the Babylonians commenced astronomical observations 49,000 years (7 × 7 x 1000) before Alexander the Great. Most early references were related to 7 (Sun, Moon, and five visible planets), 12 (number of zodiacal signs and months per year), 30 (degrees per sign of the zodiac), and higher combinations of these numbers and other numbers associated with astronomical observations and astrology. The problem of understanding the exact nature of ancient astrology is that it was only partly documented, leaving the question of the extent of their undocumented astrological knowledge. Michael Baigent in From the Omens of Babylon: Astrology and Ancient Mesopotamia suggests that there is evidence that there was probably an older or parallel oral tradition of astrology at the time of publication of Enuma Anu Enlil