TSK · Numbers 3:38

But the Levites shall encamp round about the tabernacle of the testimony, that there be no wrath upon the congregation of the children of Israel: and the Levites shall keep the charge of the tabernacle of the testimony.

And they shall keep his charge, and the charge of the whole congregation before the tent of meeting, to do the service of the tabernacle.

The families of the Gershonites shall encamp behind the tabernacle westward.

And the prince of the fathers' house of the families of Merari was Zuriel the son of Abihail: they shall encamp on the side of the tabernacle northward.

And their brethren the Levites were appointed for all the service of the tabernacle of the house of God.