וַיֹּ֤אמֶר יְהוָה֙ אֶֽל־אַהֲרֹ֔ן אַתָּ֗ה וּבָנֶ֤יךָ וּבֵית־אָבִ֙יךָ֙ אִתָּ֔ךְ תִּשְׂא֖וּ אֶת־עֲוֺ֣ן הַמִּקְדָּ֑שׁ וְאַתָּה֙ וּבָנֶ֣יךָ אִתָּ֔ךְ תִּשְׂא֖וּ אֶת־עֲוֺ֥ן כְּהֻנַּתְכֶֽם׃
Y SEÑOR dijo á Aarón: Tú y tus hijos, y la casa de tu padre contigo, llevaréis el pecado del santuario: y tú y tus hijos contigo llevaréis el pecado de vuestro sacerdocio.
Akeidat Yitzchak
One may describe the relationship of Israel to the family of nations, as akin to the relationship of the world of outer space to our world. The relationship of the priests to the rest of the Jewish people, on the other hand, may be described as akin to the relationship that exists between the world of pure spirits and the world of outer space. The tum-ah, impurity legislation reflects symbolically that a priest is to be removed from contact with whatever reminds one of the body's limitation, i.e. decay etc.