The tragedy of Nadav and Avihu highlights the tension between the concepts of the “thirsting for the living God” and “No man shall see me and live”. Our parasha continues from where Shemini left off and prevents the tragedy from recurring by emphasizing the importance of the ketoret (the incense cloud) as necessary in the Kohen Gadol's entrance to the Holy of Holies, as the steps of the Yom Kippur Service are presented.