Numbers 16:6-7

16:6 Do this, Korah, you and all your company: Take censers, 16:7 put fire in them, and set incense on them before the Lord tomorrow, and the man whom the Lord chooses will be holy. You take too much upon yourselves, you sons of Levi!”

Numbers 16:16-17

16:16 Then Moses said to Korah, “You and all your company present yourselves before the Lord – you and they, and Aaron – tomorrow. 16:17 And each of you take his censer, put incense in it, and then each of you present his censer before the Lord: 250 censers, along with you, and Aaron – each of you with his censer.”

Numbers 16:46

16:46 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!”