2 The LORD said to Moses: “Tell your brother Aaron not to come whenever he chooses into the Most Holy Place behind the curtain in front of the atonement cover on the ark, or else he will die, because I appear in the cloud over the atonement cover. (Leviticus 16:2)

12 He is to take a censer full of burning coals from the altar before the LORD and two handfuls of finely ground fragrant incense and take them behind the curtain. (Leviticus 16:12)

15 “He shall then slaughter the goat for the sin offering for the people and take its blood behind the curtain and do with it as he did with the bull’s blood: He shall sprinkle it on the atonement cover and in front of it. (Leviticus 16:15)