and take a censer full of coals of fire from the altar before the Lord ¹  and a full double handful of finely ground fragrant incense, ²  and bring them inside the veil-canopy. ³ 

The priest must put some of the blood on the horns of the altar of fragrant incense that is before the Lord in the Meeting Tent, and all the rest of the bull’s blood he must pour out at the base of the altar of burnt offering that is at the entrance of the Meeting Tent.

Then ¹  Aaron’s sons, Nadab and Abihu, each took his fire pan and put fire in it, set incense on it, and presented strange fire ²  before the Lord, which he had not commanded them to do.