Numbers 3:32

3:32 Now the head of all the Levitical leaders was Eleazar son of Aaron the priest. He was appointed over those who were responsible for the sanctuary.

Numbers 3:47

3:47 collect five shekels for each one individually; you are to collect this amount in the currency of the sanctuary shekel (this shekel is twenty gerahs).

Numbers 7:9

7:9 But to the Kohathites he gave none, because the service of the holy things, which they carried on their shoulders, was their responsibility.