Today is the holiday of Lag ba-Omer, which celebrates the end of the plague that ravaged the students of Rabbi Akiva in the 2nd century CE. Later, the holiday also became associated with another 2nd-century sage, Shimon bar Yohai, whose grave is located in the Galilean city of Meron. Chaim Strauchler discusses the origin of what has become the day’s most prominent ritual:
Bonfires are the primary custom associated with Lag ba-Omer. This custom is not recorded in the Talmud or [medieval rabbis]. While the lighting of candles upon the grave of Rabbi Shimon bar Yohai was first recorded in a letter from 1742 describing Rabbi Hayyim Ibn Atar’s visit to Meron, later travelers describe the extensive fire ceremony on Lag ba-Omer (e.g., the travel journal Sefer Ahavat Tsiyon from 1764).
Rabbi Moses Schreiber (1762–1839) criticizes the initiation of a “new” holiday that neither appears in the Talmud nor results from a modern deliverance from danger. Likewise, Rabbi Joseph Saul Nathanson (1808–1875), in a responsum concerning events that took place in 1842, expresses frustration with Lag ba-Omer fires. He specifically focuses on the custom of burning clothing on Lag ba-Omer, a practice that also gains prominent mention in travel journals (although largely unfamiliar today).
The great cost of textiles at the time and the extravagant descriptions of some of the garments used in the Meron ceremony suggest an anti-materialist asceticism tied to these ceremonies. They weren’t simply creating fire; they were destroying sartorial ostentatiousness.
More about: Halakhah, Lag ba'Omer