דַּבֵּר אֶל בְּנֵי יִשְׂרָאֵל קְדֹשִׁים תִּהְיוּ. זֶה שֶׁאָמַר הַכָּתוּב: וַיִּגְבַּהּ ה' צְבָאוֹת בַּמִּשְׁפָּט וְגוֹ' (ישעיה ה, טז). אֵימָתַי נַעֲשֶׂה הַקָּדוֹשׁ בָּרוּךְ הוּא גָּבוֹהַּ בְּעוֹלָמוֹ. כְּשֶׁיַּעֲשֶׂה מִשְׁפָּט בָּאֻמּוֹת, שֶׁנֶּאֱמַר: נִצָּב לָרִיב ה' וְעוֹמֵד לָדִין עַמִּים (שם ג, יג).
וַיִּגְבַּהּ ה' צְבָאוֹת בַּמִּשְׁפָּט (שם ה, טז). מַהוּ וְהָאֵל הַקָּדוֹשׁ נִקְדַּשׁ בִּצְדָקָה. שֶׁהוּא מִתְקַדֵּשׁ בְּעוֹלָמוֹ, בִּצְדָקָה, שֶׁהוּא מְלַמֵּד עַל יִשְׂרָאֵל סַנֵּיגוֹרְיָא, שֶׁנֶּאֱמַר: אֲנִי מְדַבֵּר בִּצְדָקָה רַב לְהוֹשִׁיעַ (ישעיה סג, א). אָמַר הַקָּדוֹשׁ בָּרוּךְ הוּא לְיִשְׂרָאֵל, לֶעָתִיד אֲנִי מִתְקַדֵּשׁ בָּכֶם, שֶׁנֶּאֱמַר: כִּי בִרְאוֹתוֹ יְלָדָיו מַעֲשֵׂה יָדַי בְּקִרְבּוֹ יַקְדִּישׁוּ שְׁמִי (שם כט, כג). וְכֵן הוּא אוֹמֵר, יִשְׂרָאֵל אֲשֶׁר בְּךָ אֶתְפָּאָר (שם מט, ג). וְאַתֶּם מִתְקַדְּשִׁים בִּי וַאֲנִי מִתְקַדֵּשׁ בָּכֶם, שֶׁנֶּאֱמַר: וְהִתְקַדִּשְׁתֶּם וִהְיִיתֶם קְדֹשִׁים (ויקרא יא, מד).
(Lev. 19:2:) “Speak unto the [whole congregation] of the Children of Israel, and say unto them, ‘You shall be holy.’” This text is related (to Is. 5:16), “The Lord of hosts has been exalted through justice, and the holy God has been sanctified through holiness.” When did the Holy One, blessed be He, become exalted in His world? When he brought about judgment and justice among the peoples of the world. It is so stated (in Is. 3:13), “The Lord stands up to plead a cause, and rises to judge peoples.”
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What is the meaning of (Is. 5:16), “and the holy God is sanctified in justice (tsedekah, which also means charity)?” That He is sanctified in His world in justice, because He advocates for the defense concerning Israel, as stated (in Is. 63:1), “it is I who speaks in justice (tsedekah), mighty to save.” The Holy One, blessed be He, said to Israel, “In the future, I will be sanctified in you, as stated (in Is. 29:23), ‘For when [Jacob] sees his children in his midst, the work of My hands, they shall sanctify My name.’” And so it says (in Is. 49:3), “Israel in whom I will be glorified.” So you are sanctified in Me, and I am sanctified in you, as stated (in Lev. 11:44; cf. 19:2), “so you shall sanctify yourselves and be holy.”
RABBAN GAMALIEL said: Just as the New Moons are renewed and sanctified in this world, so will Israel be sanctified and renewed in the future world just like the New Moons, as it is said, "Speak unto all the congregation of the children of Israel, and say unto them, Ye shall be holy: for I the Lord your God am holy" (Lev. 19:2). The sages say: The heavens and the earth are destined to pass away and to be renewed. What is written concerning them? "And all the host of the heaven shall be dissolved, and the heavens shall be rolled together as a scroll" (Isa. 34:4). Just as when a man reads in a scroll of the Torah and he rolls it, and again he opens it to read therein and he rolls it (together), likewise in the future will the Holy One, blessed be He, roll together the heavens like a scroll, as it is said, "And the heavens shall be rolled together as a scroll" (ibid.); "And the earth shall wax old like a garment" (Isa. 51:6); just as a man spreads out his garment and folds it up, and again he unfolds it || and puts it on and renews it (thereby), likewise the Holy One, blessed be He, in the future will fold up the earth and again will He spread it out and put it in its place like a garment, as it is said. "And the earth shall wax old like a garment" (ibid.).
1) (Vayikra 19:1) "And the L–rd spoke to Moses, saying (Vayikra 19:2) Speak to the entire congregation of the children of Israel, and say to them: Holy shall you be." We are hereby taught that this section was stated in the presence of all. Why so? Because most of the major tenets of Torah are inherent in it. "Holy shall you be": Separate yourselves (from arayoth.) "Holy shall you be, for holy am I, the L–rd your G d." If you sanctify yourselves, I will consider it as if you had sanctified Me, and if you do not sanctify yourselves, I will consider it as if you had not sanctified Me. — But perhaps the meaning is: If you sanctify Me, I am holy, and if not I am not holy. It is, therefore, written "for holy am I" — I remain in My holiness whether or not I am sanctified (by men). Abba Shaul says: What is the duty of the King's retinue? To follow in the footsteps of the King (and to be holy).