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17
votes
4answers
817 views

Moshe's age and the timeline of the exodus

Moshe was 80 when he first approached Par'o and the makos lasted a year, so he turned 81 in the Adar before the Jews left Mitzrayim. As he turned 120 in the Adar before the Jews entered Israel, the ...
2
votes
1answer
58 views

How long did the showdown with Paro last?

Recently my torah-study group was discussing the events of Parshat Sh'mot, and someone claimed that people could only gather straw for bricks in the fall (I don't know if that's true) and the exodus ...
3
votes
0answers
51 views

How much time must pass before making a second beracha on the same food?

If you made a beracha on a food or drink item and you took a sampling of it, how much time must pass until the next sampling for you to be required to make an additional beracha?
2
votes
2answers
100 views

How is it possible that Yisrael went out of Egypt after only 210 years due to hard work?

Is it possible to say that the Jews were in Egypt for only 210 years because they were worked so hard? Would Hashem really do that if he already told Avraham that they would be there for 400 years?
6
votes
4answers
200 views

Concept that time is a spiral

I've heard that there is a concept in Judaism of time in a spiral, but I'm not sure where that idea originally comes from (specifically, which Rabbi originally said it). The earliest I've found is Rav ...
2
votes
2answers
136 views

Can Jews standing naval watches take their shabbat in shifts?

Suppose you have an major naval ship (aircraft carrier or nuclear sub) with a small complement of Jews on board. They're divided by the executive officer to stand watches, same as the rest of the ...
1
vote
1answer
139 views

Why 72-minutes for Dutch, Swedish, Finnish, and Northern European Jews?

I am a Swedish Jew and want to know why we wait specifically 72 minutes after eating meat/flaysh before eating miklhigs. A lot of people say it is an hour, but my understanding is that a one-hour ...
1
vote
1answer
75 views

Should we really say kaddish for twelve months for a parent?

Is Kaddish really twelve months for a parent? When I said Kaddish for my father fifty years ago I read in the prayer book at the Chevra Kaddisha Bnai Jacob in Montreal that it should only be for ...
4
votes
2answers
205 views

Eating dairy after pareve on meat equipment?

If I eat hot pareve food that was made on meat equipment, is there a waiting period before I can eat dairy? I had always assumed so -- that the heat transfers the meatiness to the pareve food -- but ...
7
votes
2answers
414 views

Why 1,000 generations of ungiven Torah, not X years?

The Mainz Anonymous reads, in part (in my own translation): He created the Torah 974 generations before the world was created, then twenty-six generations [passed] from the creation of the world ...
2
votes
1answer
104 views

Are there prophetic perfect tenses?

In Christianity, there is a school of interpretation where God sometimes describe future events using past tenses. God, being outside of time, see future events as if it already happens and hence use ...
6
votes
0answers
143 views

Rishonim saying Ester took place during the second bayis

Elsewhere on this site, avi cited sources to the effect that, contrary to the Bavli (M'gila), the events recounted in the book of Ester took place after the second bes hamikdash was built. Do any ...
1
vote
3answers
200 views

What does “shachar” in “alos hashachar” mean?

We find a number of terms referring to when morning starts and then perhaps a similar term used to refer to the time of shachris. Alos HaShachar (עלות השחר) Ayeles HaShachar (אילת השחר) and Shacharis ...
4
votes
1answer
65 views

Must one publicize a lost object if it had been found a long time prior?

Let's say, for whatever reason, someone found a lost object but did not get around to publicizing it for over a year. Does the Mitzvah to publicize it still apply, assuming that after the long ...
3
votes
2answers
116 views

What took 8 days

What took the Jews 8 days to produce new oil when rededicating the Temple in the Chanuka story? It seems the process of oil-making takes a lot less time (I have done it in Israel on one of the tourist ...
4
votes
3answers
138 views

Why are we required to light Chanukah lights only for about half an hour?

Since the miracle of the oil of Chanukah was that from one flask of oil they miraculously had enough oil for the menorah to burn all night for eight days, why did Chazal require us to light only for ...
4
votes
2answers
142 views

Retroactive Get to prevent mamzerut?

If while a married couple are divorcing but before the husband has given a get at the Beit Din, the woman gets pregnant from a new boyfriend, can a get be given retroactively? Would it help that the ...
2
votes
1answer
100 views

Mesilat Yesharim - how much time per day for zehirut/watchfulness

The Mesilat Yesharim brings down zehirut (watchfulness) as one of the first steps to master. Zehirut in essence means working on cleaning oneself up from all bad behavior through analyzing one's ...
3
votes
0answers
48 views

Inconsistent scheduling for the musaf offering

In P'sachim (58a), Abaye frames a disagreement between Rabbi Yishma'el and Rabbi Akiva regarding the ordering of the korban musaf and the bazichin (bowls of frankincense burned when the old showbread ...
9
votes
1answer
421 views

Brewing fresh coffee for Shabbos with a time clock

May one prepare coffee ingredients in a brewer such as this one on Friday and set the timer to brew the coffee for 8:00 Shabbos morning?
9
votes
1answer
179 views

Group coordination for a siyum

My understanding is that a siyum should be made on the last bit of the text being studied. Thus, if the entire Mishna (all six "orders") is studied for someone's yahrzeit, the last mishna (individual ...
2
votes
1answer
91 views

“If you have time, say this”

I have seen in many siddurim, mainly in korbonos, the phrase "if you have time, add this parsha". How do you know if you have time? It seems obvious that if adding it would make you miss zman ...
5
votes
3answers
584 views

Can a woman delay going to the Mikvah?

Can a woman delay going to the Mikvah on her Mikvah night? That is, if it is the seventh day and she is scheduled to go to the Mikvah, but it turns out to be inconvenient (for example if a friend's ...
5
votes
1answer
279 views

First year counted from creation [duplicate]

What is the first year for which there exists a record of it being dated according to the currently used system that starts counting from creation?
10
votes
3answers
223 views

Can I use a Lulav or Esrog from last year?

Suppose I'm able to perfectly preserve one (or all) of the Arbaah Minim from last year so that they are still in "mint condition." Can I use them again this year?
2
votes
1answer
40 views

Baal T'acher today - based on Rosh Hashana 4

Rosh Hashana 4a & Rosh Hashana 4b mentions a whole list of items that one does the sin of Baal T'acher. There is a dispute as to when this prohibition takes effect, ranging from the first festival ...
1
vote
1answer
145 views

Eternal Gehinom

the talmud in Rosh Hashana 17a lists some sins which warrant eternal gehinom. Is this to be taken literally? or perhaps it means a very long time or until the end of this world.
5
votes
4answers
203 views

Eating meat: when do the 6 hours start?

When you eat meat, when do the 6 hours that you have to wait begin? When you start eating or when you end? Sources are always appreciated.
2
votes
0answers
40 views

Doing “Hoiche Kedushah” for Shacharit [duplicate]

Possible Duplicate: Hechi Kedushah anytime? Do any posekim say that even in shacharit, one can do the "hoiche kedushah" if the minyan-goers really need to go to work, or are in a rush for ...
4
votes
1answer
120 views

How long does it take to become a kofer?

If a person for whatever reason momentarily has a thought which denies God, but then afterwards reaffirms his belief in Hashem, is that an act of kefira? Does a momentary lapse in belief constitute a ...
14
votes
3answers
290 views

How long can you say Asher Yotzar if you forgot?

If you forgot to say Asher Yotzar and remember a while later, is there a time limit as to when you are allowed to say it?
2
votes
1answer
215 views

Sitting on a toilet during Tisha B'Av

May one sit on a toilet during Tisha B'Av? Are there any requirements that he hurry up as much as possible?
3
votes
2answers
130 views

Starting Mincha right before Shekiya

According to those who pray Mincha only up to Shekiya (sunset), are you required to finish Mincha before Shekiya or just required to begin it before Shekiya? (Sources.)
2
votes
1answer
89 views

If you've missed Zeman Kriyas Shema, what should you do?

Suppose a fellow realizes at 9:16AM that the Gra Zeman Kriyas Shema was at 9:14 and he never said Kriyas Shema yet. Is there any gain by saying it immediately even though it is past the later Zeman ...
1
vote
0answers
44 views

Time limit on repeating the shemona esra after forgetting to include an insertion

If a person forgets to say yaaleh vyavo for rosh chodesh during the shemonah esre, I understand they are supposed to go back and repeat the shemonah esre, this time saying yaaleh vyavo. Is there a ...
4
votes
2answers
128 views

Why are Pidyon HaBen ceremonies done towards evening?

Most Brissim are done in the morning, as it is mentioned that "Zerizim Makdimim L'Mitzvos". Why is this not applicable to a Pidyon Haben ceremony? If it is applicable, then why have I observed that ...
5
votes
2answers
91 views

Does Genesis 2:4 say there was only one day of creation?

Right after it says all the different parts of the world and sky being created on six separate days and rest on the seventh, it says, "These are the generations of the heavens and the earth when they ...
6
votes
1answer
111 views

Cicadas - once in 17 years

I was reading an article today regarding the Cicadas which appear once every 17 years. Is there any Sefarim that discuss this phenomenon? Also if they were created at the time the world was created, ...
4
votes
1answer
364 views

Why did God take 7 days to create the world?

Generally we assume that God is omnipotent, and could have created the world in a single day\act, so He must have had a reason to organize creation into 7 days. Why? In other words: Why didn't God ...
2
votes
1answer
103 views

Seeing dam due to relations and the halachos of vests

If a woman was a "ro'eh machmis tashmish" (she saw blood after having relations), does the day that it happened go into the account of her "vestes" (the days that she will have to be concerned she may ...
4
votes
2answers
100 views

Why did it take so long to conquer and divide the land?

We learn that Yehoshua took 7 years to conquer the land and another 7 to divide it. Why did both of these take so long? Conquest (at least from the details of the description in the text) took at ...
2
votes
0answers
93 views

Netzach, Selah, Vaed - what is the difference between these words?

Eruvin 54a says that it was taught by Rabbi Eliezer ben yaakov that wherever it says Netzach, Selah, or Vaed it means it will remain so forever. "כל מקום שנאמר 'נצח' 'סלה' 'ועד' – אין לו הפסק עולמית" ...
2
votes
0answers
123 views

Am I allowed to wear my Pebble Watch on Shabbat? [duplicate]

The Pebble is a smart watch that connects to a smart-phone via Bluetooth and can deliver messages to your wrist. Am I allowed to wear it on Shabbat if I disconnect it from my phone? Think of it, then, ...
4
votes
1answer
184 views

Why did Noah have to wait so long to exit the ark?

This is actually several similar questions compounded together. I hope this doesn't come off the wrong way, but it seems like Noah had the opportunity (and I'm sure he had the motive) to leave the ark ...
2
votes
1answer
115 views

When is a grafted tree Kosher?

I understand that fruit isn't kosher if it is picked in the first 3 years of growth. However, what about grafting trees? If two branches come from trees that each more that 3 years old, but the ...
0
votes
1answer
102 views

Early bird discounts and ribbis

Are early-bird discounts ribbis? For example, "buy before March 1, 10% off", or "tickets $12 in advance, $15 at the door" Inspired by http://myparnasa.com/collecting-interest-ribbis/
3
votes
1answer
58 views

Why does age of a water filter affect how to kasher it?

The Star-K Web site says about water filters: If they are metal and have been on [the faucet] consistently since the previous Pesach, they should be left on during kashering of the spigot [for ...
4
votes
1answer
85 views

How were long-running talmudic discussions actually conducted?

Eiruvin 13b records two years-long disputes between Beit Hillel and Beit Shammai, and surely these are not the only long-running debates. How did that work in practice? Did they really have a single ...
3
votes
1answer
160 views

How can you keep Shabbos till Tuesday?

I have heard that there are people who keep Shabbos till Tuesday. I would like to understand how that works practically. A few examples of puzzling situations: What shmoneh esrei does such a person ...
4
votes
0answers
42 views

Davar Ha'avad on Chol HaMoed — Loss coming later

It says in SA OC Siman 537 that one is allowed to do a malacha on chol hamoed if it's a "davar ha'aved". That is to say if the person doesn't do the malacha now it will come to a loss ("hefsed".) ...