אָמַר רַבִּי אָבִין בַּר רַב אַדָּא, אָמַר רַבִּי יִצְחָק: מִנַּיִן שֶׁהַקָּדוֹשׁ בָּרוּךְ הוּא מַנִּיחַ תְּפִילִּין שֶׁנֶּאֱמַר: ״נִשְׁבַּע ה׳ בִּימִינוֹ וּבִזְרוֹעַ עֻזּוֹ״. ״בִּימִינוֹ״ — זוֹ תּוֹרָה, שֶׁנֶּאֱמַר: ״מִימִינוֹ אֵשׁ דָּת לָמוֹ״, ״וּבִזְרוֹעַ עֻזּוֹ״ — אֵלּוּ תְּפִילִּין, שֶׁנֶּאֱמַר: ״ה׳ עֹז לְעַמּוֹ יִתֵּן״. וּמִנַּיִן שֶׁהַתְּפִילִּין עוֹז הֵם לְיִשְׂרָאֵל — דִּכְתִיב: ״וְרָאוּ כׇּל עַמֵּי הָאָרֶץ כִּי שֵׁם ה׳ נִקְרָא עָלֶיךָ וְיָרְאוּ מִמֶּךָּ״. וְתַנְיָא, רַבִּי אֱלִיעֶזֶר הַגָּדוֹל אוֹמֵר: אֵלּוּ תְּפִילִּין שֶׁבָּרֹאשׁ. אֲמַר לֵיהּ רַב נַחְמָן בַּר יִצְחָק לְרַב חִיָּיא בַּר אָבִין: הָנֵי תְּפִילִּין דְּמָרֵי עָלְמָא מָה כְּתִיב בְּהוּ? אֲמַר לֵיהּ ״וּמִי כְּעַמְּךָ יִשְׂרָאֵל גּוֹי אֶחָד בָּאָרֶץ״. וּמִי מִשְׁתַּבַּח קוּדְשָׁא בְּרִיךְ הוּא בְּשִׁבְחַיְיהוּ דְּיִשְׂרָאֵל? אִין, דִּכְתִיב: ״אֶת ה׳ הֶאֱמַרְתָּ הַיּוֹם״. וּכְתִיב: ״וַה׳ הֶאֱמִירְךָ הַיּוֹם״, אָמַר לָהֶם הַקָּדוֹשׁ בָּרוּךְ הוּא לְיִשְׂרָאֵל: אַתֶּם עֲשִׂיתוּנִי חֲטִיבָה אַחַת בָּעוֹלָם, וַאֲנִי אֶעֱשֶׂה אֶתְכֶם חֲטִיבָה אַחַת בָּעוֹלָם. אַתֶּם עֲשִׂיתוּנִי חֲטִיבָה אַחַת בָּעוֹלָם, שֶׁנֶּאֱמַר: ״שְׁמַע יִשְׂרָאֵל ה׳ אֱלֹהֵינוּ ה׳ אֶחָד״, וַאֲנִי אֶעֱשֶׂה אֶתְכֶם חֲטִיבָה אַחַת בָּעוֹלָם״, שֶׁנֶּאֱמַר ״וּמִי כְּעַמְּךָ יִשְׂרָאֵל גּוֹי אֶחָד בָּאָרֶץ״. אֲמַר לֵיהּ רַב אַחָא בְּרֵיהּ דְּרָבָא לְרַב אָשֵׁי: תִּינַח בְּחַד בֵּיתָא, בִּשְׁאָר בָּתֵּי מַאי? אָמַר לֵיהּ: ״כִּי מִי גוֹי גָּדוֹל״, ״וּמִי גּוֹי גָּדוֹל״, ״אַשְׁרֶיךָ יִשְׂרָאֵל״, ״אוֹ הֲנִסָּה אֱלֹהִים״, ״וּלְתִתְּךָ עֶלְיוֹן״. אִי הָכִי, נְפִישִׁי לְהוּ טוּבֵי בָּתֵּי? אֶלָּא: ״כִּי מִי גוֹי גָּדוֹל״ ״וּמִי גּוֹי גָּדוֹל״ דְּדׇמְיָין לַהֲדָדֵי — בְּחַד בֵּיתָא, ״אַשְׁרֶיךָ יִשְׂרָאֵל״ ״וּמִי כְּעַמְּךָ יִשְׂרָאֵל״ — בְּחַד בֵּיתָא, ״אוֹ הֲנִסָּה אֱלֹהִים״ — בְּחַד בֵּיתָא, ״וּלְתִתְּךָ עֶלְיוֹן״ — בְּחַד בֵּיתָא.
Rab Abin b. Rab Adda said in the name of R. Isaac : Whence is it that the Holy One, blessed be He, lays Tefillin ? As it is said, "The Lord hath sworn by His right hand, and by the arm of His strength" (Is. Ixii. 8). "By His right hand" means Torah ; as it is said, "At His right hand was a fiery law unto them" (Deut. xxxiii. 2); "by the arm of His strength" means Tefillin, as it is said, "The Lord will give strength unto His people" (Ps. xxix. 11). But whence is it that the Tefillin are a strength to Israel? As it is written, "And all the peoples of the earth shall see that the name of the Lord is called upon thee, and they shall he afraid of thee" (Deut. xxviii. 10); and there is a teaching: R. Eliezer the Elder says : This refers to the Tefillin worn on the head. Rab Nahman b. Isaac asked Rab Hiyya b. Abin : What is written in the Tefillin of the Lord of the Universe ? He answered, "And who is like Thy people Israel, a nation one in the earth?" (I Chron. xvii 21). Does, then, the Holy One, blessed be He, glory in the praises of Israel ? Yes, for it is written, "Thou hast avouched the Lord this day" (Deut. xxvi. 17) and "The Lord hath avouched thee this day " (ibid. v. 18). The Holy One, blessed be He, said to Israel, "You have made Me the only object of your love in the world, so I shall make you the only object of My love in the world." "You have made Me the only object of your love in the world" — as it is said, "Hear O Israel, the Lord our God, the Lord is one" (ibid. vi. 4). "I shall make you the only object of My love in the world" — as it is said, "And who is like Thy people Israel, a nation one in the earth?" (I Chron. xvii. 21). Rab Aha b. Raba said to Rab Ashe : This is all very well with one case of the Tefillin ; what, however, of the other? He answered : [It contains the following :] "For what great nation is there," etc. (Deut. iv. 7), "And what great nation is there," etc. (ibid, v. 8), "Happy art thou, O Israel " etc. (ibid, xxxiii. 29), "Or hath God assayed to go" etc. (ibid. iv. 34), and "To make thee high above all nations" etc. (ibid. xxvi. 19). If so, it will have too many partitions ! Nay, "For what great nation is there" and "And what great nation is there," which are very similar, are in one partition; "Happy art thou, O Israel" and "Who is like Thy people Israel" in one ; "Or hath God assayed to go" in one ; and "To make thee high above all nations" in one.