...In the seventh month, on the tenth day of the month, you
shall afflict your souls, and you shall not do any work ... For on
that day he shall provide atonement for you to cleanse you from all
your sins before the L-RD. -Leviticus 16:29-30
Yom Kippur is probably the most important holiday of the Jewish
year. Many Jews who do not observe any other Jewish custom will
refrain from work, fast and/or attend synagogue services on this
day. Yom Kippur occurs on the 10th day of Tishri. The holiday is
instituted at Leviticus 23:26 et seq.
The name "Yom Kippur" means "Day of Atonement," and that pretty
much explains what the holiday is. It is a day set aside to
"afflict the soul," to atone for the sins of the past year. In Days
of Awe, I mentioned the "books" in which G-d inscribes all of our
names. On Yom Kippur, the judgment entered in these books is
sealed. This day is, essentially, your last appeal, your last
chance to change the judgment, to demonstrate your repentance and
make amends.
As I noted in Days of Awe, Yom Kippur atones only for sins between
man and G-d, not for sins against another person. To atone for sins
against another person, you must first seek reconciliation with
that person, righting the wrongs you committed against them if
possible. That must all be done before Yom Kippur.
Yom Kippur is a complete Sabbath; no work can be performed on that
day. It is well-known that you are supposed to refrain from eating
and drinking (even water) on Yom Kippur. It is a complete, 25-hour
fast beginning before sunset on the evening before Yom Kippur and
ending after nightfall on the day of Yom Kippur. The Talmud also
specifies additional restrictions that are less well-known: washing
and bathing, anointing one's body (with cosmetics, deodorants,
etc.), wearing leather shoes (Orthodox Jews routinely wear canvas
sneakers under their dress clothes on Yom Kippur), and engaging in
sexual relations are all prohibited on Yom Kippur.
As always, any of these restrictions can be lifted where a threat
to life or health is involved. In fact, children under the age of
nine and women in childbirth (from the time labor begins until
three days after birth) are not permitted to fast, even if they
want to. Older children and women from the third to the seventh day
after childbirth are permitted to fast, but are permitted to break
the fast if they feel the need to do so. People with other
illnesses should consult a physician and a rabbi for advice.
Most of the holiday is spent in the synagogue, in prayer. In
Orthodox synagogues, services begin early in the morning (8 or 9
AM) and continue until about 3 PM. People then usually go home for
an afternoon nap and return around 5 or 6 PM for the afternoon and
evening services, which continue until nightfall. The services end
at nightfall, with the blowing of the tekiah gedolah, a long blast
on the shofar. See Rosh Hashanah for more about the shofar and its
characteristic blasts.
It is customary to wear white on the holiday, which symbolizes
purity and calls to mind the promise that our sins shall be made as
white as snow (Is. 1:18 ). Some people wear a kittel, the white
robe in which the dead are buried.