Numbers 16:5, 7, 10, 35, 40, 46-48

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.

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.

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

And fire came forth from Jehovah, and devoured the two hundred and fifty men that offered the incense.

to be a memorial unto the children of Israel, to the end that no stranger, that is not of the seed of Aaron, come near to burn incense before Jehovah; that he be not as Korah, and as his company: as Jehovah spake unto him by Moses.

And Moses said unto Aaron, Take thy censer, and put fire therein from off the altar, and lay incense thereon, and carry it quickly unto the congregation, and make atonement for them: for there is wrath gone out from Jehovah; the plague is begun. And Aaron took as Moses spake, and ran into the midst of the assembly; and, behold, the plague was begun among the people: and he put on the incense, and made atonement for the people. And he stood between the dead and the living; and the plague was stayed.