Did a 13th-Century Rabbi Know about Lightning Rods?

Oct. 13 2021

Baḥya ben Asher, who lived and taught in Saragossa, Spain in the late 13th and early 14th centuries, authored several works of rabbinic scholarship, drawing on philosophical as well as traditional sources. In the most famous of these, his commentary on the Bible, he suggests a surprising reason for the construction of the Tower of Babel:

The men [who built the tower] were wicked and knowledgeable in all wisdoms. They thus made a city and tower in order to be saved from a deluge of fire. Since they knew that the world had previously been destroyed in a deluge of water, they . . . sought to build a place such that if [God] wanted to bring a deluge of fire and burn the world, they could . . . tie up a part of the fire’s core such that it would not come close to the city. This is similar to that which we find even in our generation that some wise men know the power to tie up part of lightning so that it will only go up to a specific boundary.

Some readers, notes Yaakov Taubes, have concluded the Baḥya was referring to the lightning rod, and understood this technology—perhaps from the work of Arab scientists—more than four centuries before Benjamin Franklin. Taubes suggests a more plausible interpretation:

A more likely source for Rabbi Baḥya’s comment may have come from his Christian neighbors. A 15th-century book of Christian liturgical customs from Valencia (not far from where Baḥya spent much of his life) . . . notes that one should ring the bells whenever a storm threatens, and specifies that the number of bells rung is dependent upon the severity of the storm. . . . No less a figure than Francis Bacon, in his Sylva Sylvarum (1626), tried to explain how [ringing church bells could prevent lightning strikes] on a scientific level.

In Baḥya’s time, [indeed], bell ringing appears to have been seen as a scientific or supernatural method of dissipating storms. . . . Baḥya would certainly not ascribe any real power to a Christian religious ritual, but the lines separating magic, religion, and science were not always so clear in the medieval period.

Read more at Lehrhaus

More about: Genesis, Hebrew Bible, Magic, Science, Tower of Babel

Israel Had No Choice but to Strike Iran

June 16 2025

While I’ve seen much speculation—some reasonable and well informed, some quite the opposite—about why Jerusalem chose Friday morning to begin its campaign against Iran, the most obvious explanation seems to be the most convincing. First, 60 days had passed since President Trump warned that Tehran had 60 days to reach an agreement with the U.S. over its nuclear program. Second, Israeli intelligence was convinced that Iran was too close to developing nuclear weapons to delay military action any longer. Edward Luttwak explains why Israel was wise to attack:

Iran was adding more and more centrifuges in increasingly vast facilities at enormous expense, which made no sense at all if the aim was to generate energy. . . . It might be hoped that Israel’s own nuclear weapons could deter an Iranian nuclear attack against its own territory. But a nuclear Iran would dominate the entire Middle East, including Egypt, Jordan, the United Arab Emirates, and Bahrain, with which Israel has full diplomatic relations, as well as Saudi Arabia with which Israel hopes to have full relations in the near future.

Luttwak also considers the military feats the IDF and Mossad have accomplished in the past few days:

To reach all [its] targets, Israel had to deal with the range-payload problem that its air force first overcame in 1967, when it destroyed the air forces of three Arab states in a single day. . . . This time, too, impossible solutions were found for the range problem, including the use of 65-year-old airliners converted into tankers (Boeing is years later in delivering its own). To be able to use its short-range F-16s, Israel developed the “Rampage” air-launched missile, which flies upward on a ballistic trajectory, gaining range by gliding down to the target. That should make accuracy impossible—but once again, Israeli developers overcame the odds.

Read more at UnHerd

More about: Iran nuclear program, Israeli Security