Why Jews Observe Mourning During the Counting of the Omer

The days between Passover and Shavuot are traditionally considered a period of sadness. During this time, 24,000 students of Rabbi Akiva passed away, and this tragedy left a deep imprint on Jewish tradition.

The Talmudic Account

The Talmud in Tractate Yevamot (62b) states: “They said: Rabbi Akiva had twelve thousand pairs of students… and they all died in one period, because they did not treat one another with respect… It was taught: they all died between Passover and Shavuot… and they all died a harsh death.”

The sages explain that they died from diphtheria.

A World Left Without Torah

After the death of Rabbi Akiva’s students, the Midrash describes how the world was left spiritually desolate: “The world remained desolate until Rabbi Akiva came to our rabbis in the south and taught them… Rabbi Meir, Rabbi Yehuda, Rabbi Yosei, Rabbi Shimon, and Rabbi Elazar ben Shamua — and they were the ones who re-established the Torah.”

Through these new disciples, Torah scholarship was rebuilt.

According to Bereishit Rabbah , Rabbi Akiva warned his new students about the mistake of the previous generation: “My first students died only because they were jealous of one another. Take care not to act as they did. Arise and fill the entire Land of Israel with Torah.”

His words emphasized the importance of respect and unity among scholars.

Mourning Customs During the Omer

Because tens of thousands of Torah scholars died in such a short period, and the world was temporarily left empty of Torah learning, the Jewish people established these days as a time of mourning.

Several mourning practices are observed during this period. These include:

• Not getting married

• Not taking haircuts

• Avoiding music

• Avoiding optional dancing and celebrations

These customs reflect the sorrow connected to the loss of Rabbi Akiva’s students.

Since the tragedy occurred because the students did not show proper respect for one another, this period is seen as a time to strengthen relationships between people and work on respect, kindness, and unity.

Mourning Throughout the Entire Omer

There are several traditions regarding the exact length of the mourning period during the Omer.

One opinion holds that the mourning customs apply during the entire Counting of the Omer. This is based on the Talmudic statement that Rabbi Akiva’s students died from Passover until Shavuot, implying the whole period.

Mourning Until Lag BaOmer

Another widely known custom is to observe mourning until Lag BaOmer (the 33rd day of the Omer). According to tradition, the deaths of Rabbi Akiva’s students stopped on this day.

The Sephardic Custom: Until the 34th Day

Many Sephardic communities observe mourning until the 34th day of the Omer. This is based on the Talmudic phrase that the students died until “peros ha-Atzeret.” The word peros means half, referring to half a month before Shavuot. Subtracting fifteen days from the forty-nine days of the Omer leaves thirty-four days, which is the period during which the students died.

Thirty-Three Days of Mourning

Another opinion holds that there are thirty-three days of mourning, from the 1st of Iyar until the 3rd of Sivan. According to this tradition, Rabbi Akiva’s students died on the days of the Omer that were not designated for joy — thirty-three days in total — and mourning is therefore observed for thirty-three consecutive days.