Leviticus 16:1-3 ▼

1 The LORD spoke to Moses after the death of Aaron’s two sons, who died after they entered the LORD’s presence and burned the wrong kind of fire before him.

2 The LORD said to Moses, “Warn your brother, Aaron, not to enter the Most Holy Place behind the inner curtain whenever he chooses; if he does, he will die. For the Ark’s cover—the place of atonement—is there, and I myself am present in the cloud above the atonement cover.

3 “When Aaron enters the sanctuary area, he must follow these instructions fully. He must bring a young bull for a sin offering and a ram for a burnt offering.