Tag Archives: Jewish Calendar

Origins & Secrets of Birkat Levanah

This weekend we welcome the month of Cheshvan and celebrate the first Rosh Chodesh of the new year 5785. In ancient times, the Sanhedrin would officially announce the start of a new month upon sighting of the new moon. Once the Sanhedrin was disbanded, the Sages fixed a set calendar for the millennia ahead. And since then, instead of a formal announcement of a new month upon new moon sighting, we recite a birkat levanah, a “blessing on the moon”. Where exactly did this blessing and practice originate? And what is the meaning behind its enigmatic text?

The earliest source for birkat levanah is thought to be a passage in the tractate Sanhedrin. Amidst a discussion of examining witnesses in a Jewish court, the Talmud asks a side-question: “Until when may one recite the blessing on the new month?” (41b) Two answers are given, one that it should be recited within the first week of the month (seven days) and another that it can be recited until just after the full moon, ie. the sixteenth day of the month, since at that point the moon begins to wane. Continue reading →

Seventeen Tamuz and the Ten Plagues

Next Tuesday is the seventeenth of Tamuz, commemorating a handful of tragedies in Jewish history starting with the shattering of the Tablets following the sin of the Golden Calf. A careful examination of Torah chronology reveals that there may be one more major event that took place at this time, and it involves the Ten Plagues in Egypt. While the Torah describes in great detail how the Ten Plagues came about, it says very little about their timing. All we know is that the final plague upon the firstborn was on the fifteenth of Nisan. Can we work backwards from this point and create an exact timeline of when the Ten Plagues occurred? Continue reading →

Time Travel in the Torah

Are there cases of time travel in the Torah and ancient Jewish texts? Is it possible that Adam, Enoch, and Moses were able to traverse the universe using faster-than-light technology? And how do we deal with apparent chronological contradictions in the Torah? Find out in this fascinating class, where we also uncover the true meaning of God’s Ineffable Name, propose a theory for how Adam was able to live 930 years, and calculate the speed of God’s divine “chariots”.

For a written summary and lots more information (including the time travel of Eliyahu briefly mentioned in the class), please see here.

For more on Block Universe Theory and Judaism, see ‘Time, Gravity, and Free Will’.

See also ‘How Did Adam Live 930 Years?’