King James Version
And after that went the Levites in to do their service in the tabernacle of the congregation before Aaron, and before his sons: as the LORD had commanded Moses concerning the Levites, so did they unto them.English Standard Version
And after that the Levites went in to do their service in the tent of meeting before Aaron and his sons; as the LORD had commanded Moses concerning the Levites, so they did to them.Catholic Public Domain Version
so that, having been purified, they might enter to their duties in the tabernacle of the covenant before Aaron and his sons. Just as the Lord had instructed Moses about the Levites, so was it done