Numbers 7:3-8

3When they brought their offering before the Lord, six 1covered carts and twelve oxen, a cart for every two of the leaders and an ox for each one, then they presented them in front of the tabernacle.

4Then the Lord spoke to Moses, saying,

5“Accept these things from them, that they may be 2used in the service of the tent of meeting, and you shall give them to the Levites, to each man according to his service.”

6So Moses took the carts and the oxen and gave them to the Levites.

7Two carts and four oxen he gave to the sons of Gershon, according to 3their service,

8and four carts and eight oxen he gave to the sons of Merari, according to 4their service, 5under the direction of Ithamar the son of Aaron the priest.