The High Priest's Heightened Mourning and Marriage Restrictions
Where this fits in the story: Exodus 28–29 and Leviticus 8 establish the anointed high-priestly office whose heightened holiness obligations are specified here.
Where Scripture takes it next: Hebrews 7:11–28 — Very Strong contrast. Jesus' priesthood is not a simple continuation of Aaronic genealogy; it is a different, permanent order grounded in indestructible life and divine appointment.
Evidence boundary: The NT does not qualify Jesus as high priest by certifying that he fulfilled every Aaronic marriage/mourning rule; Hebrews argues from a different priestly order.