TSK · Numbers 16:6

and take a censer full of coals of fire from the altar before the LORD and a full double handful of finely ground fragrant incense, and bring them inside the curtain.

Then Moses said to Aaron,“Take the censer, put burning coals from the altar in it, place incense on it, and go quickly into the assembly and make atonement for them, for wrath has gone out from the LORD– the plague has begun!”