כִּ֣י עַ֤ם קָדוֹשׁ֙ אַתָּ֔ה לַיהוָ֖ה אֱלֹהֶ֑יךָ וּבְךָ֞ בָּחַ֣ר יְהוָ֗ה לִֽהְי֥וֹת לוֹ֙ לְעַ֣ם סְגֻלָּ֔ה מִכֹּל֙ הָֽעַמִּ֔ים אֲשֶׁ֖ר עַל־פְּנֵ֥י הָאֲדָמָֽה׃ (ס)
For thou art a holy people unto the LORD thy God, and the LORD hath chosen thee to be His own treasure out of all peoples that are upon the face of the earth.
Zohar
Rabbi Yehuda said, Heaven forbid that Bilaam would have any knowledge of the upper holiness. This is because the Holy One, blessed be He, desires no other people or tongue to make use of His glory, but His holy children alone, that is, Yisrael, who are called 'children to Hashem'. He said, "you shall therefore sanctify yourselves, and you shall be holy" (Vayikra 11:44), which means that those who are holy shall use holy things. And only Yisrael are holy, as it is written, "For you are a holy people" (Devarim 14:2); you, and no other people, are holy.