Lag ba'Omer, a minor festival that falls on the
18th of Iyyar, is the 33rd day of the seven-week counting of the Omer which
takes places between Passover and Shavuot (Lag is an acronym for the Hebrew
letters lamed and gimmel, whose numerical equivalent is 33). On Lag ba'Omer
the semi-mourning of the Omer period is lifted, and weddings, haircuts and celebrations
are permitted.
The reason for the institution of Lag ba'Omer is found in an obscure Talmudic
passage (Yevamot 62b), which describes a plague that killed 24,000 disciples
of 1st cent. Rabbi Akiva during the Omer period; a complicated commentary on
the passage suggests that the plague ceased at the middle of the counting period,
hence the Scholars' Festival on Lag Ba'Omer.
According to one more historical theory concerning the origins of the minor
festival, the Jewish rebel Bar Kokhba may have secured a victory against the
Romans on the 33rd day of the Counting, after a series of defeats. Roman rule
made it necessary to hide the real reason for celebration and to attribute it
other reasons (such as the reason mentioned above). Other scholars suggests
that the taking up of arms at the outbreak of the first revolt against Rome
took place on this date in 66 CE.
According to other traditions, the great Flood commenced on this date, and in
the time of Moses, manna began to fall from heaven. A later tradition established
La ba'Omer as the date of death R. Shimon bar Yohai (2nd cent., student of Rabbi
Akiva), to whom the Zohar is attributed, and hence came to be celebrated in
particular by the kabbalists. At Rabbi Shimon bar Yohai's burial place, in Meron
in the Galilee, mystics and Hasidim gather on Lag ba'Omer, giving their young
sons their first haircuts, lighting bonfires, and dancing and singing through
the night.
Lighting bonfires, a central form of celebrating this day in Israel among religious
and non-religious Jews, is quite likely unrelated to Rabbi Shimon bar Yohai
but rather based on an ancient, heathen, light-ceremonial. The custom of playing
with bows in arrows on Lag ba'Omer may have originated in Europe, where children
customarily played in the fields, reenacting the Jewish-Roman war.