Numbers 16:7-10

7and put fire therein, and put incense upon them before the LORD tomorrow: 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.

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

9seemeth 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 the LORD, and to stand before the congregation to minister unto them;

10and that he hath brought thee near, and all thy brethren the sons of Levi with thee? and seek ye the priesthood also?