And the Lord spake unto Moses At the same time he gave the instructions about the consecration of the Levites, the time of their entrance on their service, and of leaving it, was fixed: saying; as follows.
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The Levites purified themselves from sin and washed their clothes, and Aaron lifted them up and presented them to the LORD as a special offering. He then offered a sacrifice to purify them and make them right with the LORD .
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After that the Levites went into the Tabernacle to perform their duties, assisting Aaron and his sons. So they carried out all the commands that the LORD gave Moses concerning the Levites.