Numbers 16:21

16:21 “Separate yourselves ¹  from among this community, ²  that I may consume them in an instant.”

Numbers 19:20

19:20 But the man who is unclean and does not purify himself, that person must be cut off from among the community, because he has polluted the sanctuary of the Lord; the water of purification was not sprinkled on him, so he is unclean.

¹ tn The verb is הִבָּדְלוּ (hibbadÿlu), the Niphal imperative of בָּדַל (badal). This is the same word that was just used when Moses reminded the Levites that they had been separated from the community to serve the Lord.

² sn The group of people siding with Korah is meant, and not the entire community of the people of Israel. They are an assembly of rebels, their “community” consisting in their common plot.