These were the men counted by Moses and Aaron and the twelve leaders of Israel, each one representing his family.
NIV
These were numbered by Moses and Aaron, and the leaders of Israel, twelve men, each representing his father's house.
AMP
These are those that were numbered, which Moses and Aaron numbered, and the princes of Israel, being twelve men: each one was for the house of his fathers.
KJV
"The Levites, however, are to set up their tents around the tabernacle of the covenant law so that my wrath will not fall on the Israelite community. The Levites are to be responsible for the care of the tabernacle of the covenant law."
NIV
But the Levites shall encamp around the tabernacle of the Testimony, that there may be no wrath upon the congregation of the Israelites; and the Levites shall keep charge of the tabernacle of the Testimony.
AMP
But the Levites shall pitch round about the tabernacle of 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 testimony.
KJV