Q: Could you please give me a simple explanation of why the Jewish calendar year is dated 5760 to correspond with the Occidental year 1999-2000?
A: The number associated with the Jewish Year is intended to represent the "Year of the World" and is sometimes written A.M. 5760, where A.M. stands for the Latin phrase "Anno Mundi" or "Year of the World." However, the number is based on calculations made by Jewish rabbis in the Middle Ages, and does not back to ancient times at all. The year is never given this way in the Bible.
The Talmud passage you have cited would have appealed to audiences at that time because it would have implied that the time of Messiah was near at hand at that time. If the world is to last 6,000 years, and the first 2,000 were before the Law (the Torah), that means the second 2,000 begins around 1,400 BC and would end around 600 AD, ushering in the age of Messiah. At the time this was written, that date would have been in the not-to-distant future. Obviously, however, it has not come to pass.
Every generation tends to look for schemes which point to its own times for the coming of Messiah, regardless of whether they think it will be his first or second coming. A popular scheme in our own time is to view the history of the world as paralleling the week of creation, with each "day" a thousand years. Under this plan, the world will toil for six thousand years, and then the "Sabbath" will be the 1,000 year reign of Messiah. As elegant as this sounds, it does not actually come from Scripture and should not be taken too seriously. What we should take seriously is the words of Jesus himself, who said "No one knows about that day or hour, not even the angels in heaven, nor the Son, but only the Father." (Matthew 24:36) He added
"Therefore keep watch, because you do not know on what day your Lord will come." (Matthew 24:42) We must treat every day as a possible day for his return, and not treat one year as more likely than another.
David Brown
AMF International
http://www.amfi.org