Numbers 16:5

³  And they gathered 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 the LORD is among them: wherefore then lift ye up yourselves above the congregation of the LORD?

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

⁵  And he spake unto Korah and unto all his company, saying, Even to morrow the LORD will show who are his, and who is holy; and will cause him to come near unto him: even him whom he hath chosen will he cause to come near unto him.

⁶  This do; Take you censers, Korah, and all his company;

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