Numbers 16:15-18

¹⁵And Moses was very wroth, and said unto Jehovah, Respect not thou their offering: I have not taken one ass from them, neither have I hurt one of them.

¹⁶And Moses said unto Korah, Be thou and all thy company before Jehovah, thou, and they, and Aaron, to-morrow:

¹⁷and take ye every man his censer, and put incense upon them, and bring ye before Jehovah every man his censer, two hundred and fifty censers; thou also, and Aaron, each his censer.

¹⁸And they took every man his censer, and put fire in them, and laid incense thereon, and stood at the door of the tent of meeting with Moses and Aaron.