Numbers 7:8

He gave four wagons and eight oxen to the Merarites for the work they had to do under the direction of Ithamar, son of the priest Aaron.

Numbers 3:36-37

It was the duty of the Merarites to be in charge of the framework of the inner tent, the crossbars, posts, sockets, and all the equipment. They took care of these things.

Numbers 4:28-33

This is the work of the Gershonite families in the tent of meeting. Ithamar, son of the priest Aaron, will be in charge of them.

Treasury of Scripture Knowledge

Summary

And four wagons and eight oxen he gave unto the sons of Merari, according unto their service, under the hand of Ithamar the son of Aaron the priest.

Bible References

Four wagons

Numbers 3:36
It was the duty of the Merarites to be in charge of the framework of the inner tent, the crossbars, posts, sockets, and all the equipment. They took care of these things.
Numbers 4:28
This is the work of the Gershonite families in the tent of meeting. Ithamar, son of the priest Aaron, will be in charge of them.