תנו רבָּנַן: כֵּיצַד הָיוּ כּוֹרְכִין אֶת שְׁמַע? אוֹמְרִים ״שְׁמַע יִשְׂרָאֵל ה׳ אֱלֹהֵינוּ ה׳ אֶחָד״, וְלֹא הָיוּ מַפְסִיקִין, דִּבְרֵי רַבִּי מֵאִיר. רַבִּי יְהוּדָה אוֹמֵר: מַפְסִיקִין הָיוּ, אֶלָּא שֶׁלֹּא הָיוּ אוֹמְרִים ״בָּרוּךְ שֵׁם כְּבוֹד מַלְכוּתוֹ לְעוֹלָם וָעֶד״. וַאֲנַן, מַאי טַעְמָא אָמְרִינַן לֵיהּ? כִּדְדָרֵישׁ רַבִּי שִׁמְעוֹן בֶּן לָקִישׁ. דְּאָמַר רַבִּי שִׁמְעוֹן בֶּן לָקִישׁ: ״וַיִּקְרָא יַעֲקֹב אֶל בָּנָיו וַיֹּאמֶר הֵאָסְפוּ וְאַגִּידָה לָכֶם״. בִּיקֵּשׁ יַעֲקֹב לְגַלּוֹת לְבָנָיו קֵץ הַיָּמִין, וְנִסְתַּלְּקָה מִמֶּנּוּ שְׁכִינָה. אָמַר: שֶׁמָּא חַס וְשָׁלוֹם יֵשׁ בְּמִטָּתִי פְּסוּל, כְּאַבְרָהָם שֶׁיָּצָא מִמֶּנּוּ יִשְׁמָעֵאל, וְאָבִי יִצְחָק שֶׁיָּצָא מִמֶּנּוּ עֵשָׂו? אָמְרוּ לוֹ בָּנָיו: ״שְׁמַע יִשְׂרָאֵל, ה׳ אֱלֹהֵינוּ ה׳ אֶחָד״. אָמְרוּ: כְּשֵׁם שֶׁאֵין בְּלִבְּךָ אֶלָּא אֶחָד, כָּךְ אֵין בְּלִבֵּנוּ אֶלָּא אֶחָד. בְּאוֹתָהּ שָׁעָה פָּתַח יַעֲקֹב אָבִינוּ וְאָמַר: ״בָּרוּךְ שֵׁם כְּבוֹד מַלְכוּתוֹ לְעוֹלָם וָעֶד״. אָמְרִי רַבָּנַן: הֵיכִי נַעֲבֵיד? נֵאמְרֵיהּ, לֹא אֲמָרוֹ מֹשֶׁה רַבֵּינוּ. לָא נֵאמְרֵיהּ, אֲמָרוֹ יַעֲקֹב. הִתְקִינוּ שֶׁיְּהוּ אוֹמְרִים אוֹתוֹ בַּחֲשַׁאי. אָמַר רַבִּי יִצְחָק, אָמְרִי דְּבֵי רַבִּי אַמֵּי: מָשָׁל לְבַת מֶלֶךְ שֶׁהֵרִיחָה צִיקֵי קְדֵירָה. אִם תֹּאמַר — יֵשׁ לָהּ גְּנַאי. לֹא תֹּאמַר — יֵשׁ לָהּ צַעַר. הִתְחִילוּ עֲבָדֶיהָ לְהָבִיא בַּחֲשַׁאי.
The Sages taught in the Tosefta: How would they bundle Shema? They recited: “Hear Israel, the Lord is our God the Lord is One,” without pausing; this is the statement of Rabbi Meir. Rabbi Yehuda says: They paused, but they would not recite: Blessed be the name of His glorious kingdom for ever and ever. The Gemara asks: What is the reason that we recite that passage: Blessed be the name of His glorious kingdom for ever and ever, even though it does not appear in the Torah? The Gemara answers: We recite it in accordance with that which Rabbi Shimon ben Lakish interpreted homiletically. As Rabbi Shimon ben Lakish said that it is written: “And Jacob called his sons and said, Gather around and I will tell you what will occur to you in the end of days” (Genesis 49:1). Jacob wanted to reveal to his sons when the complete redemption would arrive at the end of days (see Daniel 12:13), but the Divine Presence abandoned him, rendering him unable to prophesy. He said: Perhaps the Divine Presence has abandoned me because, Heaven forfend, one of my descendants is unfit, as was the case with my grandfather Abraham, from whom Ishmael emerged, and like my father Isaac, from whom Esau emerged. His sons said to him: Hear Israel, our father, the Lord is our God, the Lord is One. They said: Just as there is only one God in your heart, so too, there is only one in our hearts. At that moment Jacob our father said in praise: Blessed be the name of His glorious kingdom for ever and ever, as all his children were righteous. The Rabbis said: What should we do? Shall we recite this verse? But Moses our teacher did not say it in the Torah as part of Shema. Shall we not recite it? But Jacob said it. In order to resolve this dilemma they established that this passage should be recited surreptitiously. Rabbi Yitzḥak said that the school of Rabbi Ami said: This is analogous to the daughter of a king who smelled the fragrance of the dried spices stuck to the bottom of the pot and craved to eat them. What can she do? If she tells her servants to give it to her, she will be disgraced, as the dried spices are a contemptible food. However, if she does not say she wants to eat them, she will endure suffering. Her servants began to bring them to her surreptitiously.