Numbers 16:6

3 and they assembled themselves together against Moses and against Aaron, and said unto them, Ye take too much upon you, seeing all the congregation are holy, every one of them, and Jehovah is among them: wherefore then lift ye up yourselves above the assembly of Jehovah?

4 And when Moses heard it, he fell upon his face:

5 and he spake unto Korah and unto all his company, saying, In the morning Jehovah will show who are his, and who is holy, and will cause him to come near unto him: even him whom he shall choose will he cause to come near unto him.

7 and put fire in them, and put incense upon them before Jehovah to-morrow: and it shall be that the man whom Jehovah doth choose, he [shall be] holy: ye take too much upon you, ye sons of Levi.

8 And Moses said unto Korah, Hear now, ye sons of Levi:

9 [seemeth it but] a small thing unto you, that the God of Israel hath separated you from the congregation of Israel, to bring you near to himself, to do the service of the tabernacle of Jehovah, and to stand before the congregation to minister unto them;