Sunday, November 13, 2011
Short Q&A - Machon Ot
Founded by Rabbi Yitzchak Shteiner and Rabbi Yitzchak Goldshtein, Machon Ot is a non-profit organization based in Jerusalem which has developed computerized techniques of torah identification.
Every examined scroll is entered into The International Torah Registry, a worldwide computer database assigning a unique torah code (likened to a fingerprint) to every torah scroll analyzed. Using this technique, any torah scroll can be immediately identified and matched with its owner. This technique is the only one used by both The Israel National Police, Interpol and The New York Police Department for returning a recovered stolen torah scroll.
I've seen their sticker in the Aron Kodesh of many Israeli synagogues and they are well known there. This is a great initiative and I hope it catches on in the rest of the world. Their service is very affordable and it can help in case of robbery or loss - something unfortunatedly not uncommon today (see here about a case last year in Europe)
Here's my short interview:
1. When was the Machon founded?
1988. It's a non-profit organization and our mission is to repair and donate Torah to places which do not have a Kosher Torah Scroll.
2. How can a client send a scroll for analysis? Must he send to Israel only or also other locations?
He needs to fill up a registration form and submit it to Israel. We also come to the US from time to time.
3. How many Torah scrolls have the "fingerprint" identification today?
15000.
4. Do you also analyse other scrolls, like Megillat Esther or only Sefer Torah?
We analyze both Torah Scrolls and Megillat Esther.
5. Do you check who wrote the Sefer Torah you analyze? The scrolls with Machon Ot fingerprint are all Kosher?
We can't know who wrote the Torah but we have signs that tell us if it was written by a Kosher Scribe. We check Kosher and damaged Torahs and provide an estimate in case of need of repair.
6. How much it costs to fingerprint a Torah Scroll, roughly?
About U$100.
7. Did the police recover any scrolls because of the fingerprint?
Yes, in Yahud (Israel).
8. What's the oldest Torah you received in the Machon?
500 years.
Thursday, November 3, 2011
Halacha LeMaase: Hanging Words
few obscure Halachot. Take a look in the first two pics:
But the most interesting bit comes now:
Monday, October 24, 2011
Baruch Shekivanti!
"In the beit midrash, it is considered an exciting delight to find that one's original thought was actually innovated by an earlier source, unbeknownst to the current thinker. This is usually taken to be a vindication of the thought patterns of the learner, and an exoneration of his logic. The happy student may exclaim, 'baruch shekivanti!', which ostensibly means 'blessed is He who directed me [to the same conclusion as source x]'. This phrase has become of modern parlance in orthodox circles, and is used in situations removed from torah learning, as well. (...)" SourceExactly one year after my novel explanation about the Ot of Cain, which I identified to be the Tav just like the Ot of Mitzraim in Exodus 12:13 , I was shown a source to this claim - the Siftei Chachamim (see here, last line): אות ת רמז בו תחיה כלומר שלא יהרגנו
It's just remains unclear if Hashem inscribed in Cain the letter Tav in Ktav Ivri or Ashurit. The Ot of Mitzraim was in Ktav Ivri, like an X. So did Cain have our traditional Tav or an X in his forehead?
Just an addendum, the Siftei Chachamim also brings that the letter could have been the Hey, one of the letters in G-d's name. As I mentioned in the original post, the Peirush Hasulam says that it was a Vav. I thought that was all - Tav, Hey and Vav. Then I looked in older Mikraot Gedolot and found this alternative version of the Siftei Chachamim (see here): אות י רמז בו יחיה כלומר שלא יהרגנו. Somebody obviously messed up in the copying because that is NOT what the Siftei Chachamim says, so in case you see it, it's a clear Taut Sofer, copier's error.
Monday, October 3, 2011
Melechet Shamayim
Sunday, October 2, 2011
Ze Keili VeAnveihu זה אלי ואנוהו
Just a quick briefing:
In that post I mentioned that according to some rabbanim, there's no concept of Ze Keili Veanveihu in something which is concealed from the eye (i.e. Tefillin). Yesterday I saw that the Keset HaSofer explicitly disagrees and even brings a proof from the Aron HaKodesh, which was gold coated not only externally but internally as well. That is because, says the Keset Hasofer, of Ze Keili Veanveihu. See below (here is the original):
However, if Ze Keili relates exclusively to the item (חפצא), then when you look at the item there's nothing special about the hidden gold coat or the special parshiot. The item just looks the same as any other and therefore only an external embelishment will make it special. Hence the wording ZE keili, the word ZE ("this") is usually referred to something you can point at i.e. not hidden.
What option do you think is more correct? If you think nobody would spend money on a hidden embellishment and that therefore the first opinion doesn't make sense, here's a famous story that illustrates the psychology behind the first opinion, although is not Torah related. Here it is - Lehavdil!
Steve Jobs has a many enviable qualities. His attention to detail, his ability to grasp what people actually want, his management style and presentation skills are all things that many CEO's envy.
(...)That scenario almost repeated itself with the original Mac. Upon seeing the mother board Steve deemed it ugly. When designers pointed out that the only service technicians would actually see the motherboard, Steve shot back famously "I'll see it." (source)
Friday, September 23, 2011
Saving an Holocaust Torah Scroll - Part II
So here we are, a year since I first saw the Holocaust Torah I wrote about. For a full year nothing much happened and, to my great pain, I wasn't managing to get any breakthrough in saving this very special scroll.
During the course of this year, I kept this story to myself and my family, as I had no interest in spreading a sad story like this one to my friends. But on Shavuot, the day we celebrate the Giving of the Torah, I was sitting next to a family friend who mentioned he was involved with an Holocaust claim in another European city. I then told him about this story and he volunteered to solve the stalemate. A very respected figure in the community, this friend had the connections, experience and the latitude to negotiate the return of the Torah scroll.
In very little time, he was able to mobilize the local Jewish community and gain the support of the city's vice-mayor, Ludo Van Campenhout. After a very eloquent letter from Rabbi Lieberman, the city's Chief Rabbi, this story broke out in the news. Now that this story is public I can give you the specifics. The Torah Scroll is housed in Hendrik Conscience Biblioteek, one of Antwerp's main libraries.
Here is a quick Google translation of the original article, from the Gazet Van Anwterpen:
Jews claim the Torah Scroll back
20.9 The Jewish Community of Antwerp is claiming an ancient Torah scroll to be returned from the Heritage Library. But that's not so simple.
Chief Rabbi Lieberman of the Jewish Community of Antwerp wants the Heritage Library to return an original handwritten Torah scroll to the community. The roll, like a Bible, is now in the archives of the library.According to chief rabbi Lieberman, the Torah scroll's home is at the community's synagogue and that according to Jewish religious practices, that is the only proper place for such scroll. The Torah scroll has been decades in the library. Only a few years ago, the religious writing was discovered by staff
History
The history of the Torah scroll is as exciting as sinister. The writings, rolled nearly 20 feet long, were given during the Second World War by a Antwerp Jew to the former city librarian.The man hoped this would keep the roll out of the hands of the Germans. And he succeeded. Torah Scrolls during the Second World War were without exception burned. It is likely that the role of the Heritage Library is the only one that survived the German destruction in Antwerp.
"Belongs in the synagogue"
As per Rabbi Lieberman's letter to Ludo Van Campenhout, "I think that really belongs Torah scroll in a synagogue, and I will do whatever I can to return the scroll to the Jewish community."The Heritage Library will restore the Torah scroll and a few years to the public display in the Museum aan de Stroom (MAS), where a show about religion in Antwerp will take place. "That seems a good idea. Especially since the Jews themselves say that a Torah scroll is only one place: the synagogue. It would mean that we give back the role, "concludes Ludo Van Campenhout.
Complications
"We know there is a demand from the Jewish community to take over the Torah scroll," said director of the Heritage Library An Renard. "But there are a few complications. We do not know who brought the Torah scroll during the war. "Apart from the Jewish Community of Antwerp , there are other Jewish communities in the area. Who is the rightful owner? "We do not know. This makes it difficult to transfer the scroll. "Furthermore, the Torah scroll is in poor condition and in urgent need of restoration. "Before we assign any role, we want to do the necessary investigation and ensure that the role is well conserved," says An Renard.Minister of Culture and Worship Philip Heylen (CD & V) shares this opinion. "I think that with the Jewish communities and the Heritage Library should sit around the table. It would be very unwise to act quickly and without proper research to make a decision. That does not mean we exclude that the Torah scroll is transferred to the Jewish community in Antwerp".
20.9 The Jewish Community of Antwerp is claiming an ancient Torah scroll to be returned from the Heritage Library. But that's not so simple.
Chief Rabbi Lieberman of the Jewish Community of Antwerp wants the Heritage Library to return an original handwritten Torah scroll to the community. The roll, like a Bible, is now in the archives of the library.According to chief rabbi Lieberman, the Torah scroll's home is at the community's synagogue and that according to Jewish religious practices, that is the only proper place for such scroll. The Torah scroll has been decades in the library. Only a few years ago, the religious writing was discovered by staff
Well, this is major news. Before any comment, I must enphasize that we should display great respect and gratitude to the Biblioteek, which managed to store and preserve the scroll for over 60 years. That's truly remarkable.
With that said, it seems there's a real chance this special Sefer Torah will be finding its way back to a synagogue after over 60 years of isolation. Imagine the impact of reading from it on a Shabbath prayer for the first time in so many decades... I think that's a once-in-a-lifetime occasion, kind of a closing of a cicle for the Antwerp Jewish community. Many local Holocaust survivors relate that after the Nazi occupation all the Torah scrolls from the city's two main Synagogues were taken to the street and burned in front of the community, with the exception of one scroll which was rushed away. Is this the same scroll? Impossible to know but be it as it may, this surviving scroll is perhaps the only of its kind in this city and a testament of the endurance and rebirth of the Jewish Community of Antwerp. I hope we can get it on time for Simchat Torah.
Thursday, September 1, 2011
The Lost Torah Scroll from Munkatch
Sunday, July 31, 2011
Stam Stories #5: The Sofer and the Quill
Rav Moshe passed from this world, but, regrettably, during the commotion, they forgot to place the quill in his coffin. As the students were about to lift the coffin for its last time, they found it impossible to lift. Try as they did, the coffin was impossible to raise. They could not figure out why this had happened, until someone remembered the quill. They had forgotten to carry out Rav Moshe's tzavaah, last request. As soon as they brought the quill, the hand of the deceased reached out from within the coffin and took the pen in the natural way it was used. Suddenly, the coffin became as light as a feather, and it was taken to its final resting place.
A holy man; a holy quill; a kiddush Shem Shomayim, a sanctification of the Name of Heaven. We now have an idea of the kedsushas Sefer Torah, sanctity of a Sefer Torah.
(Source)
Tuesday, April 12, 2011
Matzos and Tefillin of Rabbeinu Tam
וקשרתם... וכתבתם, כל שישנו בקשירה ישנו בכתיבה, וכל שאינו בקשירה אינו בכתיבה (Gittin 45)
Tuesday, February 22, 2011
Saving an Holocaust Torah Scroll - Part I
Well, I myself am dealing with a Holocaust scroll which is housed in an European library since World War 2. The library tells me that after the Nazi occupation, a Jewish man came to the library and asked them to protect the Torah Scroll he had in his possession. I guess he felt that people who preserve books would understand the importance of the scroll and keep it from being destructed. And so it was. They kept the scroll and took great care of it since 1941, and in one way or another they contacted me because they wanted to know more about its history.
Monday, January 24, 2011
Ktav Ari
He was born in Jerusalem[1] in 1534 to an Ashkenazi father, Solomon, and a Sephardic mother;[6] died at Safed, Ottoman Empire controlled land of Israel July 25, 1572 (5 Av 5332). While still a child he lost his father, and was brought up by his rich uncle Mordechai Frances, on his mother's side, atax-farmer out of Cairo, Egypt.At the age of fifteen he married his cousin and, being amply provided for financially, was able to continue his studies. Though he initially may have pursued a career in business, he soon turned to asceticism and mysticism. About the age of twenty-two years old he became engrossed in the study of the Zohar, a major work of the Kabbalah that had recently been printed for the first time, and adopted the life of a recluse. He retreated to the banks of the Nile, and for seven years secluded himself in an


Thursday, January 13, 2011
My Progress #7: 2nd Mezuza is reviewed by expert sofer..
- In the word Deganecha, the Gimel's right leg doesn't comes lower than the left side ("gimel's yud") - both legs are leveled and that's not optimal. Solution: Make the right leg bigger and there's no problem of Kesidran (Mezuza cannot be fixed after it's finished) because this is not a fix, only a hiddur.

- In the word Besadecha, the lamed in the next line is coming inside the Daled slightly. There's a potential issue with that because the Daled could look like a Hey, as the only difference between these two letter (Daled and Hey) is the little dot in the bottom-left side. Solution: This is not a major problem since what's coming inside the Daled is not the actual Lamed but the Lamed's Tag, therefore it's fixable. There are tow possible solutions: either make the Daled's leg a bit shorter, so the Tag of Lamed will not be inside of the Daled; or erase a bit of the Lamed's Tag - i.e. make it smaller. The latter solution is preferable since it's always better to touch a tag instead of the actual letter. (note the small Tag in the Beit next to the Lamed - I did that to avoid having the Tag coming into the Chaf)

Saturday, January 8, 2011
Amazing Megillot #9 - JTS
Sunday, December 19, 2010
Using the Magnifying Lense in Safrut

One of the most important concepts of Safrut is that every word should be "Mukaf Gevil" - which means that it should be surrounded by white. For instance, when two letters touch each other there's a no Mukaf Gevil - the letters don't have their own place in the Klaf. That renders a scroll Pasul.
Sunday, November 14, 2010
White Fire and Black Fire
Nowadays, the Ashkenazi sofrim use a more "modern" Peh that also has the inner Bet (if you look in the "negative space"):
What's this mysterious inner Bet?
The Talmud says that the Torah was given with Black Fire and White Fire, and the Kabalists give many different explanations to this concept.
Rabbi Menachem MiPanu, one of the leading Kabbalists of the 16th century explains that the letters of the Torah are the Black Fire, which is easily visible. The White Fire is more difficult to see - it's the empty parchement of the Torah, which includes the gaps (open and closed Parshiot), the Sirtut (guiding lines) and contour of the black letters, like the Peh's inner Bet.
The letter Peh has "heavy" connotation - it's symbolizes "din", judgment. Saturday, November 6, 2010
Stam Stories #4: The letters and the creation
כשרצה הקב"ה לברוא את העולם, באו כל האותיות לפניו מסופן לראשן, והתחילה אות ת' להכנס בתחילה. אמרה רבון העולמים: טוב לפניך לברוא בי את העולם, כי אני חותמת הטבעת שלך שהיא אמת, ואתה נקרא בשם אמת. יפה למלך להתחיל באות אמת, ולברוא בי את העולם. אמר לה הקב"ה: יפה את, וישרה את, אבל אין את ראויה לברוא בך את העולם, משום שאת עתידה להיות חותם המוות, ומשום שאת כך, אין את ראויה לברוא בך את העולם. מיד יצאה.
נכנסה לפניו אות ש', אמרה לפניו, רבון העולמים, טוב לפניך לברוא בי את העולם, כי בי נקרא שמך שדי, ויפה לברוא את העולם בשם קדוש. אמר לה, יפה את, וטובה את ואמיתית את, אבל משום שאותיות שקר לקחו אותך להיות עמהן, איני רוצה לברוא את העולם בך, כי לא יתקיים שקר, אלר אם אותיות ק' ר' יקחו אותך מכאן נשמע, שכל מי שרוצה לומר שקר, יקח בתחילתו יסוד אמת, ואחר כך יקיים לו השקר. כי אות ש' אות אמת היא, אות אמת שבה נתייחדו האבות, וק' ור' הן אותיות הנראות על צד הרע, כי הס"א היא קר, בלי חום שהיא חיות...וכדי שיתקיימו, הן לוקחות אות ש' בתוכן,
נכנסה אות צ', אמרה לפניו ריבון העולמים, טוב לך לברוא בי את העולם, שבי חתומים צדיקים, ואתה שנקרא צדיק, אתה רשום בי אמר לה, צדי, צדי את וצדיק את, אבל את צריכה להיות נסתרת, אין את צריכה להתגלות כל כך, להתחיל בך בריאת העולם, בשביל שלא לתת פתחון פה לעולם
נכנסה אות פ' אמרה לפניו: רבון העולמים, טוב לפניך לברוא בי את העולם, כי הגאולה שאתה עתיד לעשות בעולם רשומה בי, כי זה הוא פדות. וע"כ בי ראוי לברוא את העולם. אמר לה: יפה את, אבל בך נרשם פשע שבסתר, כעין הנחש שמכה ומביא ראשו לתוך גופו. כך, מי שחוטא כופף ראשו. וכן, אמר, לאות ע', שבה נרשם עון. ואע"פ שאמרה, שיש בי ענוה. אמר לה הקב"ה, לא אברא בך את העולם. יצאה מלפניו.
נכנסה אות ס', אמרה לפניו: רבון העולמים, טוב לפניך לברוא בי העולם. כי יש בי סמיכה לנופלים, שכתוב, סומך ה' לכל הנופלים. אמר לה: משום זה את צריכה למקומך, ואל תזוזי ממנו, שאם את יוצאת ממקומך, אלו הנופלים, מה יהיה עליהם, שהם סמוכים עליך. מיד יצאה מלפניו.
נכנסה אות נ', אמרה לפניו, רבונו העולם, טוב לפניך לברוא בי את העולם, שבי כתוב נורא תהלות וכן בתהלה של צדיקים כתוב נאוה תהלה, אמר לה נון, שובי למקומך, כי בשבילך חזרה האות ס' למקומה, והיי סמוכה עליה.
נכנסה אות מ', אמרה לפניו: רבון העולם, טוב לפניך לברוא בי את העולם, כי בי נקראת מלך, אמר לה, כך הוא ודאי, אבל לא אברא בך את העולם, משום שהעולם צריך למלך. שובי למקומך, את, והל' והכ', כי לא יפה לעולם לעמוד בלא מלך... באותה השעה ירדה מלפניו אות כ' מעל כסא כבודו. נזדעזעה ואמרה לפניו: רבון העולם, טוב לפניך לברוא בי את העולם, כי כבודך אני. כשירדה אות כ' מעל כסא כבודו, נזדעזעו מאתים אלף עולמות ונזדעזע הכסא, וכל העולמות נזדעזו לנפול. אמר לה הקב"ה, כף, כף, מה את עושה כאן, לא אברא בך את העולם, שובי למקומך, כי בך כליה, שובי לכסאך והיי שם.
...נכנסה אות י'. אמרה לפניו: רבון העולם, טוב לפניך לברוא בי את העולם, כי אני התחלת השם הקדוש, ויפה לך לברוא בי את העולם. אמר לה: די לך שאת חקוקה בי ואת רשומה בי וכל חפצי בך, עלי, לא יפה לך להיות נעקרת משמי.
... נכנסה אות ט' אמרה לפניו: רבון העולם, טוב לפניך לברוא בי את העולם, כי בי אתה נקרא טוב וישר. אמר לה: לא אברא בך את העולם, כי טובך סתום בתוכך, וגנוז בתוכך. ז"ש, מה רב טובך אשר צפנת ליראך. וכיון שהטוב גנוז בתוכך הרי אין בו חלק לעולם הזה שאני רוצה לברוא, אלא בעולם הבא. ועוד, משום שטובך גנוז בתוכך, יטבעו שערי ההיכל. ועוד, כי הח' כנגדך, כשתתחברנה יחד, תהיינה ח"ט. דהיינו חטא. וע"כ לא נרשמו אותיות אלו בשבטים הקדושים. מיד יצאה מלפניו.
... נכנסה אות ז', אמרה לפניו: רבון העולם, טוב לפניך לברוא בי את העולם, כי בי ישמרו בניך שבת, שכתוב זכור את יום השבת לקדשו. אמר לה: לא ארברא בך את העולם. כי יש בך מלחמה, חרב שנונה ורומח מלחמה, כלי זיין, ואת כעין הנ', שלא נברא בה העולם, משום שיש בה נפילה, מיד יצאה מלפניו.
נכנסה אות ו', אמרה לפניו: רבון העולם, טוב לפניך לברוא בי את העולם, שאני אות משמך הויה. אמר לה: ואו, את וה' די לכן, שאתן אותיות משמי, שאתן בסוד שמי, וחקוקות ומפותחות בשמי, לא אברא בכן את העולם.
נכנסו אות ד' ואות ג'. אמרו אף הן כך. אמר גם להן, די לכן להיות זו עם זו, שהרי לא יחדלו אביונים מן הארץ, וצריכים לגמול עמהם חסד. הד' היא עניה, כי נקראת דלת מלשון דלות. הג', גומלת לה חסד, וע"כ אל תתפרדנה זו מזו. ודי לכן לזון זו את זו.
נכנסה אות ב'. אמרה לו: רבון העולם, טוב לפניך לברוא בי את העולם, כי בי מברכים אותך למעלה ולמטה. כי ב' היא ברכה. אמר לה הקב"ה: ודאי בך אברא את העולם, ואת תהיי ההתחלה, לברוא בך את העולם.
עמדה אות א' ולא נכנסה. אמר לה הקב"ה: אלף אלף, למה אין את נכנסת לפני כשאר כל האותיות. אמרה לפניו: רבון העולם, כי ראיתי שכל האותיות יצאו מלפניך בלי תועלת, מה אעשה שם אני. ועוד, כי כבר נתת לאות ב' את המתנה הגדולה הזו, ואין ראוי למלך העליון, שיעביר את המתנה שנתן לעבדו, ולתת אותה לאחר. אמר לה הקב"ה, אלף אלף, אע"פ שבאות ב', נברא העולם, את תהי ראש לכל האותיות, אין בי יחוד אלא בך, בך יתחילו כל החשבונות, וכל מעשי בני העולם. וכל היחוד אינו אלא באות א'.
Thursday, October 28, 2010
My Progress #6: 2nd Mezuza
Monday, October 4, 2010
Mark of Cain and the Mezuza of Egypt
יג ויאמר קין אל יהוה גדול עוני מנשא יד הן גרשת אתי היום מעל פני האדמה ומפניך אסתר והייתי נע ונד בארץ והיה כל מצאי יהרגני טו ויאמר לו יהוה לכן כל הרג קין שבעתים יקם וישם יהוה לקין אות לבלתי הכות אתו כל מצאו
The Midrashim speak about this Ot / אות and there a few possibilities mentioned:
- Hashem gave Cain the gift of Shabbos, also called an "Ot" - [אות היא לעולם [שמות לא: יז., and by keeping the Shabbat Cain was guaranteed to survive.
- Hashem gave Cain a dog to protect him from the other creatures.
- Hashem marked his forehead with one of the Hebrew Alphabet's 22 letters (Rashi)
So it seems to me that there's room for interpretation here and I have an alternative option, based on the Torah Shelema's take on an old Minhag on Hilchot Mezuza. Please bare with me as I lay the background story before I move forward.
In the times of the Geonim there was a Minhag of writing additional mystical names in the Mezuza alongside the Mezuza's Parshiot. The ספר יראים brings it down here and you can see this odd Mezuza below:

The Rambam and others strongly opposed this practice and this Minhag eventually fell in disuse. But if you look carefully, you will see five letters written in an odd font at the very end of the Mezuza. Rabbi Kasher brings the first explanation, which is that these are angel names written in special Kabbalistic code, but he goes to explore a whole different possibility - that these might be Ktav Ivri letters, which is the old Hebrew script used by Jews before the times of Ezra the prophet. In regards to this second explanation, the question is obvious - why in world would five Ktav Ivri find their way in a Mezuza?
The answer is unique and extremely interesting. In the last Makah of Egypt, the angels came down to kill the Egyptian firstborns and Hashem told Am Israel to mark their door so the angels would not enter their houselhold (exodus 12:13):
והיה הדם לכם לאות, על הבתים אשר אתם שם, וראיתי את-הדם, ופסחתי עלכם; ולא-יהיה בכם נגף למשחית, בהכתי בארץ מצריםThe simple reading is that the blood will be a sign, but here again some commentators say that the sign was actually a letter, written with blood in the doorposts. More precisely, an X which is the Ktav Ivri letter for Tav, which symbolizes life (תחיה) [The Jews at that time only used Ktav Ivri and that's why they marked it like an X and not in the shape of our current Tav (ת)].
Rabbi Kasher says that because the X protected the Jews in Egypt, it's reasonable to assume that many started to add this X to their actual Mezuzot for an "enhanced protection" - after all, the Mitzva of Mezuza is a remembrance to the Mezuza of Mitzraim, which was simply an X.
That explains the first of the five letters, the X.
The five Ktav Ivri letters in the Mezuza are equivalent to תחאחא in our script and they mean תחיה אמן חיים אמן - a prayer for life. But the point is, that Rabbi Kasher identifies the X in the Mezuza as the very X marked in the doorposts in Egypt, which in turn was called an "אות / Ot".
If so, perhaps the unidentified "אות / Ot" given to Cain is here again the same unidentified "Ot" that is mentioned by Yetziat Mitzraim - the X, or Tav. But why would Hashem give out of all letters the Tav?
The explanation is the same as in Yetziat Mitzraim: Tav is the initial of תחיה, "you shall live", and it was Hashem's guarantee to Cain that he would not be murdered - that is, that he would live.
So after we connect the "אות / Ot" of Cain, to the "אות / Ot" of the Ktav Ivri Mezuza, which in turn is connected to the "אות / Ot" of Egypt, we have a consistent explanation of which letter is bring alluded all along - the X, the Ktav Ivri equivalent of our Tav.
Below you can see the source, which is the Torah Shelema (by the way, a hard to find but invaluable resource to anyone seeking clarity in the topic of Ktav Ivri and Ktav Ashurit).






