They are to perform duties for him and for the whole congregation before the Tent of Meeting, attending to the service of the tabernacle.
KJV
And they shall keep his charge, and the charge of the whole congregation before the tabernacle of the congregation, to do the service of the tabernacle.
ASV
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.