Numbers 3:35-36

3:35 Now the leader of the clan of the families of Merari was Zuriel son of Abihail. These were to camp on the north side of the tabernacle.

3:36 The appointed responsibilities of the Merarites included the frames of the tabernacle, its crossbars, its posts, its sockets, its utensils, plus all the service connected with these things,

Numbers 4:33

4:33 This is the service of the families of the Merarites, their entire service concerning the tent of meeting, under the authority of Ithamar son of Aaron the priest.”

Numbers 4:45

4:45 These are those numbered from the families of the Merarites, whom Moses and Aaron numbered according to the word of the Lord by the authority of Moses.

Numbers 7:8

7:8 and he gave four carts and eight oxen to the Merarites, as their service required, under the authority of Ithamar son of Aaron the priest.