“And take every man his censer, and put incense in them, and bring ye before the LORD every man his censer, two hundred and fifty censers; thou also, and Aaron, each of you his censer.”
King James Version (KJV)
16:15 Respect not their offering - Accept not their incense which they are now going to offer, but shew some eminent dislike of it. He calls it their offering, though it was offered by Korah and his companions, because it was offered in the name and by the consent of all the conspirators, for the decision of the present controversy between them and Moses. I have not hurt one of them - I have never injured them, nor used my power to defraud or oppress them, as I might have done; I have done them many good offices, but no hurt: therefore their crime is without any cause or provocation.
16:16 Before the Lord - Not in the tabernacle, which was not capable of so many persons severally offering incense, but at the door of the tabernacle, where they might offer it by Moses's direction upon this extraordinary occasion. This work could not be done in that place, which alone was allowed for the offering up of incense; not only for its smallness, but also because none but priests might enter to do this work. Here also the people, who were to be instructed by this experiment, might see the proof and success of it.
16:18 Fire - Taken from the altar which stood in that place, for Aaron might not use other fire. And it is likely the rememberance of the death of Nadab and Abihu deterred them from offering any strange fire.
16:19 Against them - That they might be witnesses of the event, and, upon their success, which they doubted not of, might fall upon Moses and Aaron. And it seems by this that the people were generally incensed against Moses, and inclined to Korah's side. The glory appeared - In the cloud, which then shone with greater brightness and majesty, as a token of God's approach and presence.