You shall count for yourselves
-- from the day after the Shabbat, from the day when you bring the
Omer of the waving -- seven Shabbats, they shall be complete. Until
the day after the seventh sabbath you shall count, fifty days...
You shall convoke on this very day -- there shall be a holy
convocation for yourselves -- you shall do no laborious work; it is
an eternal decree in your dwelling places for your generations.
-Leviticus 21:15-16, 21
Shavu'ot, the Festival of Weeks, is the second of the three major
festivals with both historical and agricultural significance (the
other two are Passover and Sukkot). Agriculturally, it commemorates
the time when the first fruits were harvested and brought to the
Temple, and is known as Hag ha-Bikkurim (the Festival of the First
Fruits). Historically, it celebrates the giving of the Torah at
Mount Sinai, and is also known as Hag Matan Torateinu (the Festival
of the Giving of Our Torah).
The period from Passover to Shavu'ot is a time of great
anticipation. We count each of the days from the second day of
Passover to the day before Shavu'ot, 49 days or 7 full weeks, hence
the name of the festival. See The Counting of the Omer. The
counting reminds us of the important connection between Passover
and Shavu'ot: Passover freed us physically from bondage, but the
giving of the Torah on Shavu'ot redeemed us spiritually from our
bondage to idolatry and immorality. Shavu'ot is also known as
Pentecost, because it falls on the 50th day; however, Shavu'ot has
no particular similarity to the Christian holiday of Pentecost,
which occurs 50 days after their Spring holiday.
It is noteworthy that the holiday is called the time of the giving
of the Torah, rather than the time of the receiving of the Torah.
The sages point out that we are constantly in the process of
receiving the Torah, that we receive it every day, but it was first
given at this time. Thus it is the giving, not the receiving, that
makes this holiday significant.
Shavu'ot is not tied to a particular calendar date, but to a
counting from Passover. Because the length of the months used to be
variable, determined by observation (see Jewish Calendar), and
there are two new moons between Passover and Shavu'ot, Shavu'ot
could occur on the 5th or 6th of Sivan. However, now that we have a
mathematically determined calendar, and the months between Passover
and Shavu'ot do not change length on the mathematical calendar,
Shavu'ot is always on the 6th of Sivan (the 6th and 7th outside of
Israel. See Extra Day of Holidays.)
Work is not permitted during Shavu'ot.
It is customary to stay up the entire first night of Shavu'ot and
study Torah, then pray as early as possible in the morning.
It is customary to eat a dairy meal at least once during Shavu'ot.
There are varying opinions as to why this is done. Some say it is a
reminder of the promise regarding the land of Israel, a land
flowing with "milk and honey." According to another view, it is
because our ancestors had just received the Torah (and the dietary
laws therein), and did not have both meat and dairy dishes
available. See Separation of Meat and Dairy.
The book of Ruth is read at this time. Again, there are varying
reasons given for this custom, and none seems to be
definitive.