What does Numbers 8:9 mean?

And thou shalt present the Levites before the tent of meeting: and thou shalt assemble the whole congregation of the children of Israel:

And thou shalt bring the Levites before the tabernacle of the congregation: and thou shalt gather the whole assembly of the children of Israel together:

And thou shalt present the Levites before the tent of meeting: and thou shalt assemble the whole congregation of the children of Israel:

And make the Levites come forward in front of the Tent of meeting, and let all the children of Israel come together:

and thou hast brought near the Levites before the tent of meeting, and thou hast assembled the whole company of the sons of Israel,

And thou shalt bring the Levites before the tabernacle of the covenant, calling together all the multitude of the children of Israel:

And thou shalt bring the Levites before the tent of meeting; and thou shalt gather together the whole assembly of the children of Israel.