Sheloshim - mi yodeya?

Question

Who knows thirty?

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

Upvote all interesting answers.
Accept the best answer.
Go on to the next number.

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score 10 · Accepted Answer · answered May 04 '10 at 18:51

10

At 30 years one attains full strength (Avot 5:25)

answered May 04 '10 at 18:51

Bas613

3,069
21
30

score 9 · Answer 2 · answered May 04 '10 at 20:29

9

Days before a Chag, particularly Pesach, at which one should begin studying the attendant laws.

answered May 04 '10 at 20:29

Ariel

1,265
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9

Thanks for the inspiration to ask this: http://mi.yodeya.com/questions/1381/staying-up-all-night-on-shavuot – Isaac Moses May 04 '10 at 20:56

score 8 · Answer 3 · edited Jul 04 '13 at 05:27

8

30 letters (three times למשפחותיכם) is the width of each line in a Torah scroll. (Shulchan Aruch, Yoreh De'ah 272:2)
30 lines are used to write the Song of the Sea (Ex. 15:1-19) in a Torah scroll. (ibid. 275:4)

edited Jul 04 '13 at 05:27

Menachem

44,362
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127
247

answered May 04 '10 at 18:26

Alex

90,513
2
162
379

score 8 · Answer 4 · answered May 04 '10 at 18:51

8

30 are the years of the Levite draft (Num. 4:3).

answered May 04 '10 at 18:51

Isaac Moses

48,026
13
119
333

See also: http://mi.yodeya.com/questions/1104/esrim-mi-yodeya/1105#1105 – Isaac Moses May 04 '10 at 18:51
Possible source for http://mi.yodeya.com/questions/1371/sheloshim-mi-yodeya/1377#1377 ? – Isaac Moses May 04 '10 at 20:13

score 5 · Answer 5 · answered May 04 '10 at 16:45

5

30 traits with which Malchut is attained (Avot 6:6)

answered May 04 '10 at 16:45

Jeremy

8,884
30
61

It would have been nice if the beraita would list them. – Isaac Moses May 05 '10 at 15:55

score 3 · Answer 6 · answered May 04 '10 at 18:24

3

"30 days in a year is considered a year"

http://www.mechon-mamre.org/b/l/l4501.htm on daf gimmel, amud beis

http://www.halakhah.com/pdf/nezikin/Makkoth.pdf on page 7

answered May 04 '10 at 18:24

Yahu

16,076
1
30
66

2

but so is one day (R"H 2ab (?)) – Jeremy May 05 '10 at 15:06

score 3 · Answer 7 · edited Jan 23 '14 at 17:56

3

A person who vows to be a Nazir without specifying for how long, has to remain a Nazir for 30 days. (Nazir 5a)

edited Jan 23 '14 at 17:56

Double AA

98,894
6
250
713

answered Jan 23 '14 at 17:50

score 3 · Answer 8 · answered Feb 20 '14 at 03:45

3

30 days in a "full" month (notice a 29 day month is called "lacking" and a 30 day month is called "complete" -I'm sure there's some significance to that)

answered Feb 20 '14 at 03:45

Y e z

58,536
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score 1 · Answer 9 · answered May 05 '12 at 20:00

1

Gematria of the name "יהודה" is 30

answered May 05 '12 at 20:00

jutky

6,024
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21
45

score 0 · Answer 10 · answered Nov 07 '17 at 21:07

As we see in מדרש תנחומא חיי שרה סימן ו, thirty out of the seventy nations were scattered during the דור הפלגה. To make up for this, thirty nations came from Avrohom: the twelve sons of Yishmo'eil, the six sons of Keturoh, the two sons of Yokshon (the second son of Keturoh), the three sons of Dedon (the second son of Yokshon), the five sons of Midyon (the fourth son of Keturoh), and the two sons of Yitzchok (Yisro'eil and Edom, obviously!), which also explains a different question.

Sheloshim - mi yodeya?

Who knows thirty?

10 Answers10

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