Numbers 3:2-4; Numbers 3:26

2 The names of the sons of Aaron were Nadab the firstborn and Abihu, Eleazar and Ithamar.

3 Those were the names of Aaron’s sons, the anointed priests, who were ordained to serve as priests.

4 Nadab and Abihu, however, died before the LORD when they made an offering with unauthorized fire before him in the Desert of Sinai. They had no sons, so Eleazar and Ithamar served as priests during the lifetime of their father Aaron.

26 the curtains of the courtyard, the curtain at the entrance to the courtyard surrounding the tabernacle and altar, and the ropes—and everything related to their use.