Numbers 7:8 (KJV)

And they brought their offering before the LORD, six covered wagons, and twelve oxen; a wagon for two of the princes, and for each one an ox: and they brought them before the tabernacle.

And the LORD spake unto Moses, saying,

Take it of them, that they may be to do the service of the tabernacle of the congregation; and thou shalt give them unto the Levites, to every man according to his service.

And Moses took the wagons and the oxen, and gave them unto the Levites.

Two wagons and four oxen he gave unto the sons of Gershon, according to their service:

But unto the sons of Kohath he gave none: because the service of the sanctuary belonging unto them was that they should bear upon their shoulders.

And the princes offered for dedicating of the altar in the day that it was anointed, even the princes offered their offering before the altar.

And the LORD said unto Moses, They shall offer their offering, each prince on his day, for the dedicating of the altar.

And he that offered his offering the first day was Nahshon the son of Amminadab, of the tribe of Judah:

And his offering was one silver charger, the weight thereof was an hundred and thirty shekels, one silver bowl of seventy shekels, after the shekel of the sanctuary; both of them were full of fine flour mingled with oil for a meat offering: