Kabbalah for Numbers 3:54

Another explanation for, "After the death of the two sons of Aaron." Rabbi Yosi said: It should have read, 'After the death of Nadab and Abihu,' so what is the reason (that it says) "The two sons of Aaron?" It is obvious that they were his sons. We have learned that until that time they were not adults but still under the authority of their father. Hence, "when they came near before Hashem, and died" (Vayikra 16:1), they were rushing the time (of offering incense) during the lifetime of their father, and there was more, because of the sin they committed "when they offered a foreign fire" (Bemidbar 3:4) as we learned, in one place it is written, "When they offered a foreign fire." In another place, it is written, "When they came near before Hashem," (The combination of) both matters (caused their deaths), and so it is written here, "The two sons of Aaron". It is written, "When they came near".

We have learned that it is written, "These are the names of the sons of Aaron, the priests" (Bemidbar 3:3) and also, "Nadab the firstborn, and Abihu, Elazar and Itamar" (Ibid. 2). It should read: 'And Elazar and Itamar" so why write "Elazar and Itamar?" (i.e. why delete the Vav). Abihu was equal to his two brothers and Nadab is equal to all the others.

"And Avram took Sarai his wife" (Gen. 12:5). Here, "took" means that Abraham persuaded her to come with soft words, because a man cannot take his wife to another country without her agreement. Similarly, it is written, "Take Aaron" (Num. 20:25) and "Take the Levites" (Num. 3:45). This is why "And Abram took"; he persuaded her with words, telling her how evil were the ways of their generation. Therefore it is written, "And Abram took Sarai his wife."

There is a place for the most pious who receive even more inward, to the aspect of the temple. Who are they? They are "those that encamp before the tabernacle toward the east, before the Tent of Meeting eastward, shall be Moses and Aaron and his sons..." (Num. 3:38). Of them, it is written, "Your holy temple" (Tehilim 65:5). Many compartments upon compartments, lights upon lights exist in that world, each different from the other, each feeling ashamed by its fellow's light. For as good deeds are different in this world, so the places and their lights are different in that world.