TSK
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But the Levites shall encamp around the Tabernacle of the Testimony, that there may be no wrath on the congregation of the children of Israel: and the Levites shall be responsible for the Tabernacle of the Testimony."
They shall keep his requirements, and the requirements 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.
The prince of the fathers' house of the families of Merari was Zuriel the son of Abihail. They shall encamp on the north side of the tabernacle.
Their brothers the Levites were appointed for all the service of the tabernacle of the house of God.