Where Did the Jewish Calendar Come From?

Returning from exile in the 5th century BCE, Jews brought with them the Babylonian names for the months and the Babylonian calendar itself. As Sacha Stern writes, it suited them:

The Babylonian calendar originated in Babylonia (southern Iraq) in the early second millennium BCE, spread to the rest of Mesopotamia in the late second millennium BCE, and then became, in the first millennium BCE, the official calendar of the great empires of Assyria, Babylonia, and Persia, in use across the whole Near East. The Jews under Persian rule adopted it as their own calendar, as did many other peoples in the Persian empire.

The Jews adopted not only Babylonian month names but also the entire Babylonian calendar. This calendar was lunar, with each month beginning at the sight of a new moon. Since twelve lunar months are approximately eleven days shorter than the solar year, the Babylonian calendar was intercalated (or evened out) every two or three years by the addition of a thirteenth month (usually by duplicating the twelfth month, Adar, and less frequently by duplicating the sixth month, Elul). This allowed the lunar system to catch up with the sun and the seasons. This calendar may have been quite similar to the original Israelite one, which was most likely also lunar; indeed, this may have helped the Jews to adopt it without qualms. . . .

[A]fter the Jewish Hasmonean state broke off from its Hellenistic Seleucid overlords in the mid-2nd century BCE, the Jews no longer had any reason to comply with the calendar of distant Babylon, and their calendar soon acquired distinct features.

Read more at Bible Odyssey

More about: Ancient Persia, Babylonian Jewry, Halakhah, Maccabees, Religion & Holidays, Second Temple

What a Strategic Victory in Gaza Can and Can’t Achieve

On Tuesday, the Israeli defense minister Yoav Gallant met in Washington with Secretary of State Antony Blinken and Secretary of Defense Lloyd Austin. Gallant says that he told the former that only “a decisive victory will bring this war to an end.” Shay Shabtai tries to outline what exactly this would entail, arguing that the IDF can and must attain a “strategic” victory, as opposed to merely a tactical or operational one. Yet even after a such a victory Israelis can’t expect to start beating their rifles into plowshares:

Strategic victory is the removal of the enemy’s ability to pose a military threat in the operational arena for many years to come. . . . This means the Israeli military will continue to fight guerrilla and terrorist operatives in the Strip alongside extensive activity by a local civilian government with an effective police force and international and regional economic and civil backing. This should lead in the coming years to the stabilization of the Gaza Strip without Hamas control over it.

In such a scenario, it will be possible to ensure relative quiet for a decade or more. However, it will not be possible to ensure quiet beyond that, since the absence of a fundamental change in the situation on the ground is likely to lead to a long-term erosion of security quiet and the re-creation of challenges to Israel. This is what happened in the West Bank after a decade of relative quiet, and in relatively stable Iraq after the withdrawal of the United States at the end of 2011.

Read more at BESA Center

More about: Gaza War 2023, Hamas, IDF