Numbers 16:43

39Eleazar the priest took the bronze censers which those who were burned had offered; and they beat them out for a covering of the altar,

40to be a memorial to the children of Israel, to the end that no stranger who isn’t of the offspring of Aaron, would come near to burn incense before the LORD, that he not be as Korah and as his company; as the LORD spoke to him by Moses.

41But on the next day all the congregation of the children of Israel complained against Moses and against Aaron, saying, “You have killed the LORD’s people!”

42When the congregation was assembled against Moses and against Aaron, they looked toward the Tent of Meeting. Behold, the cloud covered it, and the LORD’s glory appeared.

43Moses and Aaron came to the front of the Tent of Meeting.

44The LORD spoke to Moses, saying,

45“Get away from among this congregation, that I may consume them in a moment!” They fell on their faces.

46Moses said to Aaron, “Take your censer, put fire from the altar in it, lay incense on it, carry it quickly to the congregation, and make atonement for them; for wrath has gone out from the LORD! The plague has begun.”

47Aaron did as Moses said, and ran into the middle of the assembly. The plague had already begun among the people. He put on the incense, and made atonement for the people.