Arphaxad's birth 602 years after Noah. The table below uses the 602-year method; the 600 year method would decrease the date for Arphaxad and all the following figures by two years. This chart counts year totals only. Anno Mundi (AM, or 'in the year of the world') can be calculated by adding 2 to any given value in either the "Birth" or "Death" columns. The result will give a corresponding date in AM. The epoch for this calendar system is 3761 BCE. (Note: the numbers in green are consistent across all versions, while the numbers in yellow are contradicted in one other version and the numbers in red are contradicted by more than one of the other versions.) 1According to most interpretations, including the New Testament Epistle to the Hebrews, Enoch did not die, but was taken away by God (at an age of 365). Genesis states that Enoch "walked with God; and he [was] not; for God took him." 2On this chart Noah is listed as having lived 502 years when he begat Shem and this calculation is based on the birth year of Arphaxad. The extra-biblical Book of Jasher also mentions that Noah was 502 years old when his wife Naamah bore Shem. Number symbolism The following table lists all the ages of the patriarchs from Adam to Moses in the Masoretic Text, which add up to 12,600. The value of 12,600 is a variant of the symbolic value of 1,260 later used in the Book of Revelation (e.g. Rev. 11:2-11; 12:4-6, 11; 13:5), although may derive from earlier traditions. Another example of the numerical schema of 12,600 can be found in the War Scroll discovered at Qumran, where "the Sons of Light shall fight against the Sons of Darkness in the final days for a period of 35 years. Employing the Jewish luni-solar calendar of the 360-day year, 35 years equals 12,600 days." The patriarchal ages were individually selected to achieve this total. Usage of Anno Mundi The current formal usage of the Anno Mundi calendar era is implemented based on the calculations of Maimonides in Mishneh Torah (completed in AD 1178). It is the official method of calculating years for the Hebrew calendar currently in use. Based on a calculation using the Masoretic Text recorded in the Seder Olam Rabbah (c 160 AD) of Rabbi Jose ben Halafta, the first five days of creation in Genesis