Leviticus 16:1 provides the reader with the historical context for the Day of Atonement. It follows the deaths of Nadab and Abihu in Leviticus 10:1–20. These laws were given to Moses to prevent the untimely death of other priests as they served in the temple.
1 L'Eternel parla à Moïse, après la mort des deux fils d'Aaron, qui moururent en se présentant devant l'Eternel.