"The priest is then to put some blood on the horn of the altar that is near the Tent of Meeting as an incense of pleasing aroma in the LORD's presence. He is to pour the rest of the bull's blood for a burnt offering at the base of the altar that is at the entrance to the Tent of Meeting.

"Then he is to place the incense over the fire in the LORD's presence, ensuring that the smoke from the incense covers the Mercy Seat, according to regulation, so he won't die.

Then he is to take a censer and fill it with coals from the fire on the altar in the LORD's presence. With his hands full of spiced and refined incense, he is to bring it beyond the curtain.

Aaron's sons Nadab and Abihu each took his own censer, placed fire in it, covered it with incense, and brought it into the LORD's presence as unauthorized fire that he had never prescribed for them.