2. "Speak to the priests the sons of Aaron:" HE ASKS, What is the reason it is written here, "the sons of Aaron?" Do I not know they are the sons of Aaron? AND HE ANSWERS, THIS TEACHES US they are "the sons of Aaron" rather than 'the sons of Levi,' because Aaron is the first of all the priests. For it is him that the Holy One, blessed be He, had chosen above everyone, so as to make peace in the world, and because Aaron's practices have brought him up to this. For Aaron strove throughout his life to increase peace in the world. Since these were his ways, the Holy One, blessed be He, raised him TO PRIESTHOOD, to introduce peace among the celestial retinue, FOR THROUGH HIS WORSHIP HE BRINGS ABOUT THE UNION OF THE HOLY ONE, BLESSED BE HE AND HIS SHECHINAH, WHICH BRINGS PEACE THROUGHOUT THE WORLDS. Hence, "Speak to the priests the sons of Aaron."
2. אֱמוֹר אֶל הַכֹּהֲנִים בְּנֵי אַהֲרֹן, מ"ט הָכָא בְּנֵי אַהֲרֹן, וְכִי לָא יְדַעְנָא דִּבְנֵי אַהֲרֹן נִינְהוּ. אֶלָּא בְּנֵי אַהֲרֹן, וְלָא בְּנֵי לֵוִי, דְּאַהֲרֹן דְּהוּא שֵׁירוּתָא דְּכָל כַּהֲנֵי דְּעָלְמָא, דְּבֵיהּ אִתְרְעֵי קוּדְשָׁא בְּרִיךְ הוּא מִכֹּלָּא, בְּגִין לְמֶעְבַּד שְׁלָמָא בְּעָלְמָא, וּבְגִין דְּאַהֲרֹן אָרְחוֹי סַלִיקוּ לֵיהּ לְהַאי, דְּכָל יוֹמוֹי דְּאַהֲרֹן הֲוָה מִשְׁתָּדַּל לְאַסְגָּאָה שְׁלָמָא בְּעָלְמָא. וּבְגִין דְּאוֹרְחוֹי כַּךְ, סָלִיק לֵיהּ קוּדְשָׁא בְּרִיךְ הוּא לְהַאי, לְמֵיעַל שְׁלָמָא בְּפָמַלְיָא דִּלְעֵילָּא, וּבְגִין כַּךְ אֱמוֹר אֶל הַכֹּהֲנִים בְּנֵי אַהֲרֹן.