Who knows eight?

Please cite/link your sources, if possible. In about one business day, I will:

  • Upvote all interesting answers.

  • Accept the best answer.

  • Go on to the next number.

  • E_8 is the eighth exceptional Lie group, and may contain the complete description of the Universe (Theory of Everything) – Jeremy Mar 24 '10 at 18:29

12 Answers 12


Eight are the creepy-crawlies in the Torah.


Shemona are the perakim of the Rambam


Eight are:

  • The days of:
    • The Bris
    • Pesach (in Chu"L)
    • Sukkos (in Chu"L)
    • Rambam's levels of Tzedaka

The number that represents the Oral Torah, according to the Maharal (see introduction to Tiferes Yisrael).

  • midreshetrachel.com/chanukah-and-the-power-of-the-oral-torah This “unity of seven and eight” manifests itself within two aspects of the Torah itself. Maharal (see introduction to his Tiferet Yisrael) sees the Written Torah as associated with the number eight and the Oral Torah with the number seven. Chanukah, where the seven unites with eight (the seven branched Menorah burning for eight days), is a holiday of the redemption and elevation of the Oral Torah (see Pachad Yitzchak Chanukah at the end of Maamar 4). – Kfir Shlomo Jun 18 '19 at 0:30

Eight(h) is the only number used as the name of a weekly parashah (Shemini).


Eight weeks of Shovavim Tat


Eight days of Chanuka


Eight are the sons of Avraham.

Eight are the sons through Leah (counting her maid).


8 are the children of Yaakov born from full wives, which are the ches of echad (Maharal Nesiv HaAvoda)


Maaseh Tuvia says that Betzalel was 8 years old when the Mishkan was built.

  • Did the Keilim need to be built Leshmah? I would have thought yes... – Double AA Feb 19 '14 at 3:38
  • @DoubleAA maybe he had simanim. – msh210 Feb 19 '14 at 16:01

Eight are the sides of the traditional Chazzan's hat.


There are 8 sets of lulav shakes done by the congregation during Hallel on Succot.

4 times saying the first set of הודו

אנא ה הושיעה נא

אנא ה הצליחה נא

last two הודו

  • This is according to Beit Hillel, and only true in places which have the custom to repeat the verses at the end. Plus saying Hodu after the Chazzan says Yomar[u] is a pretty late custom. – Double AA Dec 19 '16 at 17:55

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