Sources explain the custom of remaining awake throughout Shavuot night to study Torah, rooted in the desire to rectify the Israelites' sleep at the time of the Giving of the Torah at Sinai and to express love and readiness for receiving Torah. The practice draws on rabbinic, mystical, and biblical foundations.
חֲצֽוֹת־לַ֗יְלָה אָ֭קוּם לְהוֹד֣וֹת לָ֑ךְ
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תהילים קי״ט:ס״ב
Psalms 119:62
David declares: 'At midnight I rise to give thanks to You for Your righteous laws,' providing a biblical basis for nocturnal Torah study and praise of God as an expression of love for the Torah.
חֲצֽוֹת־לַ֗יְלָה אָ֭קוּם לְהוֹד֣וֹת לָ֑ךְ עַ֝֗ל מִשְׁפְּטֵ֥י צִדְקֶֽךָ׃
I arise at midnight to praise You for Your just rules.
שמות י״ט:ט״ז-י״ז
Exodus 19:16-17
On the morning of the Giving of the Torah, the people were startled by thunder and lightning at dawn. The Midrash notes they had overslept and needed to be woken by Moses — the all-night vigil is understood as a tikkun (rectification) for this lapse.
וַיְהִי֩ בַיּ֨וֹם הַשְּׁלִישִׁ֜י בִּֽהְיֹ֣ת הַבֹּ֗קֶר וַיְהִי֩ קֹלֹ֨ת וּבְרָקִ֜ים וְעָנָ֤ן כָּבֵד֙ עַל־הָהָ֔ר וְקֹ֥ל שֹׁפָ֖ר חָזָ֣ק מְאֹ֑ד וַיֶּחֱרַ֥ד כׇּל־הָעָ֖ם אֲשֶׁ֥ר בַּֽמַּחֲנֶֽה׃ וַיּוֹצֵ֨א מֹשֶׁ֧ה אֶת־הָעָ֛ם לִקְרַ֥את הָֽאֱלֹהִ֖ים מִן־הַֽמַּחֲנֶ֑ה וַיִּֽתְיַצְּב֖וּ בְּתַחְתִּ֥ית הָהָֽר׃
On the third day, as morning dawned, there was thunder, and lightning, and a dense cloud upon the mountain, and a very loud blast of the horn; and all the people who were in the camp trembled. Moses led the people out of the camp toward God, and they took their places at the foot of the mountain.
שיר השירים ג׳:א׳
Song of Songs 3:1
'On my bed at night I sought the one my soul loves' — the Midrash reads this as Israel's longing for the Torah and for God at the time of the Giving of the Torah, providing a poetic basis for the nighttime vigil of Shavuot.
עַל־מִשְׁכָּבִי֙ בַּלֵּיל֔וֹת בִּקַּ֕שְׁתִּי אֵ֥ת שֶֽׁאָהֲבָ֖ה נַפְשִׁ֑י בִּקַּשְׁתִּ֖יו וְלֹ֥א מְצָאתִֽיו׃
Upon my couch at night I sought the one I love— I sought, but found him not.
משנה אבות ו׳:ד׳
Pirkei Avot 6:4
The Mishnah describes the life of a Torah scholar who studies 'by day and by night,' eating bread with salt and sleeping on the ground — this portrayal of radical dedication to Torah forms the spiritual backdrop for the all-night Shavuot study custom.
כַּךְ הִיא דַּרְכָּהּ שֶׁל תּוֹרָה, פַּת בְּמֶלַח תֹּאכַל, וּמַיִם בִּמְשׂוּרָה תִשְׁתֶּה, וְעַל הָאָרֶץ תִּישַׁן, וְחַיֵּי צַעַר תִּחְיֶה, וּבַתּוֹרָה אַתָּה עָמֵל, אִם אַתָּה עֹשֶׂה כֵן, (תהלים קכח) אַשְׁרֶיךָ וְטוֹב לָךְ. אַשְׁרֶיךָ בָּעוֹלָם הַזֶּה וְטוֹב לָךְ לָעוֹלָם הַבָּא:
Such is the way [of a life] of Torah: you shall eat bread with salt, and rationed water shall you drink; you shall sleep on the ground, your life will be one of privation, and in Torah shall you labor. If you do this, “Happy shall you be and it shall be good for you” (Psalms 128:2): “Happy shall you be” in this world, “and it shall be good for you” in the world to come.
שבת פ״ח ב
Shabbat 88b
The Talmud describes the dramatic scene at Sinai, with Israel forced to receive the Torah 'under the mountain.' The intense engagement with that moment of revelation underpins why Shavuot night calls for heightened wakefulness and Torah immersion.
וְאָמַר רַבִּי יְהוֹשֻׁעַ בֶּן לֵוִי: כׇּל דִּיבּוּר וְדִיבּוּר שֶׁיָּצָא מִפִּי הַקָּדוֹשׁ בָּרוּךְ הוּא יָצְתָה נִשְׁמָתָן שֶׁל יִשְׂרָאֵל, שֶׁנֶּאֱמַר: ״נַפְשִׁי יָצְאָה בְדַבְּרוֹ״. וּמֵאַחַר שֶׁמִּדִּיבּוּר רִאשׁוֹן יָצְתָה נִשְׁמָתָן, דִּיבּוּר שֵׁנִי הֵיאַךְ קִיבְּלוּ? — הוֹרִיד טַל שֶׁעָתִיד לְהַחֲיוֹת בּוֹ מֵתִים וְהֶחְיָה אוֹתָם, שֶׁנֶּאֱמַר: ״גֶּשֶׁם נְדָבוֹת תָּנִיף אֱלֹהִים נַחֲלָתְךָ וְנִלְאָה אַתָּה כוֹנַנְתָּהּ״. וְאָמַר רַבִּי יְהוֹשֻׁעַ בֶּן לֵוִי: כׇּל דִּיבּוּר וְדִיבּוּר שֶׁיָּצָא מִפִּי הַקָּדוֹשׁ בָּרוּךְ הוּא חָזְרוּ יִשְׂרָאֵל לַאֲחוֹרֵיהֶן שְׁנֵים עָשָׂר מִיל וְהָיוּ מַלְאֲכֵי הַשָּׁרֵת מְדַדִּין אוֹתָן, שֶׁנֶּאֱמַר: ״מַלְאֲכֵי צְבָאוֹת יִדֹּדוּן יִדֹּדוּן״ — אַל תִּיקְרֵי ״יִדֹּדוּן״, אֶלָּא ״יְדַדּוּן״. וְאָמַר רַבִּי יְהוֹשֻׁעַ בֶּן לֵוִי: בְּשָׁעָה שֶׁעָלָה מֹשֶׁה לַמָּרוֹם אָמְרוּ מַלְאֲכֵי הַשָּׁרֵת לִפְנֵי הַקָּדוֹשׁ בָּרוּךְ הוּא: רִבּוֹנוֹ שֶׁל עוֹלָם, מַה לִּילוּד אִשָּׁה בֵּינֵינוּ? אָמַר לָהֶן: לְקַבֵּל תּוֹרָה בָּא. אָמְרוּ לְפָנָיו: חֶמְדָּה גְּנוּזָה שֶׁגְּנוּזָה לָךְ תְּשַׁע מֵאוֹת וְשִׁבְעִים וְאַרְבָּעָה דּוֹרוֹת קוֹדֶם שֶׁנִּבְרָא הָעוֹלָם, אַתָּה מְבַקֵּשׁ לִיתְּנָהּ לְבָשָׂר וָדָם? ״מָה אֱנוֹשׁ כִּי תִזְכְּרֶנּוּ וּבֶן אָדָם כִּי תִפְקְדֶנּוּ״? ״ה׳ אֲדֹנֵינוּ מָה אַדִּיר שִׁמְךָ בְּכׇל הָאָרֶץ אֲשֶׁר תְּנָה הוֹדְךָ עַל הַשָּׁמָיִם״!
And Rabbi Yehoshua ben Levi said: From each and every utterance that emerged from the mouth of the Holy One, Blessed be He, the souls of the Jewish people left their bodies, as it is stated: “My soul departed when he spoke” (Song of Songs 5:6). And since their souls left their bodies from the first utterance, how did they receive the second utterance? Rather, God rained the dew upon them that, in the future, will revive the dead, and He revived them, as it is stated: “You, God, poured down a bountiful rain; when Your inheritance was weary You sustained it” (Psalms 68:10). And Rabbi Yehoshua ben Levi said: With each and every utterance that emerged from the mouth of the Holy One, Blessed be He, the Jewish people retreated in fear twelve mil, and the ministering angels walked them back toward the mountain, as it is stated: “The hosts of angels will scatter [yidodun]” (Psalms 68:13). Do not read the word as yidodun, meaning scattered; rather, read it as yedadun, they walked them. And Rabbi Yehoshua ben Levi said: When Moses ascended on High to receive the Torah, the ministering angels said before the Holy One, Blessed be He: Master of the Universe, what is one born of a woman doing here among us? The Holy One, Blessed be He, said to them: He came to receive the Torah. The angels said before Him: The Torah is a hidden treasure that was concealed by You 974 generations before the creation of the world, and You seek to give it to flesh and blood? As it is stated: “The word which He commanded to a thousand generations” (Psalms 105:8). Since the Torah, the word of God, was given to the twenty-sixth generation after Adam, the first man, the remaining 974 generations must have preceded the creation of the world. “What is man that You are mindful of him and the son of man that You think of him?” (Psalms 8:5). Rather, “God our Lord, how glorious is Your name in all the earth that Your majesty is placed above the heavens” (Psalms 8:2). The rightful place of God’s majesty, the Torah, is in the heavens.
See also
מכילתא דרבי שמעון בן יוחאי י״ט:י״ז
Mekhilta DeRabbi Shimon Ben Yochai 19:17
This Tannaitic midrash comments on the verse 'And Moses brought the people out to meet God' (Exodus 19:17), noting that God Himself came out to meet Israel like a groom going out to greet the bride — imagery that underlies the idea of Shavuot as a wedding night requiring wakefulness.
ויוצא משה את העם לקראת האלהים [אמר] ר' יוסי (בן) יודן היה אומר (דברים ל"ג ב') ה' מסיני בא על סיני נגלה ואני אומר מסיני בא לקבל בניו בשמחה מושלו משל לה"ד לחתן שיצא לקראת כלה מכבודו של יוצא אתה למד מה כבודו של נכנס לכך נאמר ויוצא משה את העם לקראת האלהים:
Zohar, Emor 98a
The Zohar describes the custom of staying awake all night on Shavuot, saying that those who 'repair' (tikun) the night by studying Torah are adorned with crowns for the Shekhinah and become 'friends of the bride.' This is the earliest and most authoritative kabbalistic source for the all-night Shavuot vigil.
משנה ברורה תצ״ד:א׳
Mishnah Berurah 494:1
The Mishnah Berurah explains the rationale behind staying up all night on Shavuot: to show our love and enthusiasm for receiving the Torah, rectifying the fact that the Israelites at Sinai needed to be awakened. He also discusses halachic implications such as whether a blessing is recited on tzitzit and tefillin the next morning.
איתא בזוהר שחסידים הראשונים היו נעורים כל הלילה ועוסקים בתורה וכבר נהגו רוב הלומדים לעשות כן ואיתא בשו"ע האר"י ז"ל דע שכל מי שבלילה לא ישן כלל ועיקר והיה עוסק בתורה מובטח לו שישלים שנתו ולא יארע לו שום נזק. והטעם כתב מ"א ע"פ פשוטו שישראל היו ישנים כל הלילה והוצרך הקב"ה להעיר אותם לקבל התורה [כדאיתא במדרש] לכך אנו צריכין לתקן זה.
It is already the custom of many (students) to do this (Stay up all night and learn). The Ari ZL brings down that One should know that anyone who doesn't sleep at all, and is engrossed in learning Torah, can be assured that his sleep will be made up and nothing wrong will occur to him. The reason (for this minhug) the Magen Avraham writes that because Israel Slept all night (the night of kabbalas haTorah) and Hashem need to awaken thenm in order to receive the torah (Brought through a Midrash) Therefore, we need to now stay up all night on shavous as a Tikkun.
See also
מגן אברהם תצ״ד:א׳
Magen Avraham 494:1
The Magen Avraham codifies the practice of staying awake the entire night of Shavuot studying Torah, citing the Zohar as its source, and notes that those who do so will be protected from harm throughout the year.
איתא בזוהר שחסידים הראשונים היו נעורים כל הלילה ועוסקים בתור' וכבר נהגו רוב הלומדים לעשות כן ואפשר לתת טעם ע"פ פשוטו לפי שישראל היו ישנים כל הלילה והוצרך הקדוש ברוך הוא להעיר אותם כדאיתא במדרש לכן אנו צריכים לתקן זה:
After all, we do conclude that separation from sexual intercourse [of man and wife, in regard to certain laws of Tumah] requires six half-days, as is written in Yore Deah 196. [R.
See also
recovered from “Shenei Luchot HaBerit, Masekhet Shavuot”
שני לוחות הברית, עשרת הדברות, מסכת שבועות, נר מצוה י״ג
Shenei Luchot HaBerit, Aseret HaDibrot, Shevuot, Ner Mitzva 13
The Shelah HaKadosh (R. Isaiah Horowitz) elaborates extensively on the tikkun leil Shavuot, explaining why studying Torah all night rectifies the sin of sleeping at Sinai and prepares the soul to receive the Torah anew. He outlines what subjects to study during the night.
עוד מפרשת משפטים (שם כד, א) ואל משה אמר, עד סוף סידרא. עוד מפרשת ואתחנן (דברים ה, א) ויקרא משה אל כל ישראל, עד סוף פרשת שמע ישראל (שם ו, ט). עוד מפרשת וזאת הברכה (שם לד, א) ויעל משה עד לעיני כל ישראל. עוד ההפטרה (יחזקאל א, א) ויהי בשלושים שנה. אח"כ כל מגילות שיר השירים וכל מגילות רות. ואחר כך פסוקים אחרונים של דברי הימים. וכל זה באימה ביראה בניגון בטעם לא יאומן כי יסופר. ואחר כך למדנו משנה כל סדר זרעים, ואחר כך למדנו על דרך האמת:
Know - that the pious one (R. Yosef Karo) and I agreed to make a great effort on the night of Shavuot, and to keep sleep from our eyes. Praise to God, so it was. We didn't stop one moment - listen, and your soul will be revived...
תולדות יעקב יוסף, אמור
Toldot Yaakov Yosef, Emor
R. Yaakov Yosef of Polnoye, in the name of the Baal Shem Tov, discusses the Shavuot night vigil as an act of spiritual arousal (it'aruta dil'tata), an awakening from below that draws down the light of Torah from above.
ובזה יבואר המשך פסוקי שיר השירים (ג, א-ד) על משכבי בלילות בקשתי את שאהבה נפשי בקשתיו ולא מצאתיו אקומה נא ואסובבה בעיר בשווקים וברחובות וגו', מצאוני השומרים הסובבים בעיר וגו' כמעט שעברתי מהם וגו'. ור"ל על משכבי בלילות שהם ימי משך הגלות המכונה לשכיבה ולילה, בקשתי את שאהבה נפשי, לאהוב נפשיית, שהוא ענין הצורה ועניני עה"ב שנקרא נפש.
This collection explores the deep connections between women's mitzvot—especially challah—and the festival of Shavuot. Sources link the ancient Temple offering of two leavened loaves on Shavuot to the contemporary mitzvah of separating challah, while also highlighting women's special role at Sinai and the power of intentional, wholehearted service.
These sources address the halakhic framework for observing Shabbat when ordinary sunset and twilight are absent or extremely prolonged, including the timing of candle-lighting, prayer services, and Havdalah. They establish the role of twilight (bein ha-shemashot) and astronomical markers in determining Shabbat's onset and conclusion.
Jewish sources present competing views on whether Abraham, Isaac, and Jacob were bound by and observed all the commandments of the Torah before it was given at Sinai. Classical rabbinic sources cite Genesis 26:5 as evidence that the patriarchs kept the full Torah, while medieval commentaries grapple with textual difficulties—particularly Jacob's marriage to two sisters—and propose nuanced resolutions ranging from geographic limitation to voluntary spiritual observance.
The Zohar teaches that before Moses, divine speech (Dibbur) existed only as inarticulate voice; full articulate speech was revealed only at Sinai when voice and word were reunited. This mystical reading draws on biblical passages about Moses's heaviness of speech, God's name YHVH becoming known, and the progressive sounds at Mount Sinai.
Sources explain the custom of remaining awake throughout Shavuot night to study Torah, rooted in the Zohar's concept of tikkun (spiritual rectification) and the Midrashic account that the Israelites slept before receiving the Torah at dawn. This practice has been codified by major halakhic authorities as a widespread observance.
Sources explore the custom of remaining awake throughout Shavuot night to study Torah. The practice draws on Zoharic tradition, biblical models of midnight Torah study, and kabbalistic teachings about spiritual wakefulness as an expression of divine service and commemoration of the Torah's revelation.