Numbers 7:4-9

The LORD said to Moses, “Accept these from them, that they may be used in the work at the tent of meeting. Give them to the Levites as each man’s work requires.” So Moses took the carts and oxen and gave them to the Levites. He gave two carts and four oxen to the Gershonites, as their work required, and he gave four carts and eight oxen to the Merarites, as their work required. They were all under the direction of Ithamar son of Aaron, the priest. But Moses did not give any to the Kohathites, because they were to carry on their shoulders the holy things, for which they were responsible.