והיה על מצח אהרן... והיה על מצחו תמיד לרצון להם לפני ד'
The Tzitz, Head-Plate, was a unique addition to the Kohen Gadol’s vestments. When the Kohen Gadol wore it, the two words that were engraved on it: Kodesh l’Hashem, Holy to Hashem, served to gain Heavenly favor for blood or sacrificial body parts that were offered on the Mizbayach, Altar, while in a state of tumah, ritual contamination, allowing them to be accepted by Hashem. Tzitz meratzeh: the Tzitz caused ineligible offerings to become accepted. Whether this was only when Aharon/Kohen Gadol wore it on his forehead is the subject of a debate in the Talmud (Yoma 7b). One Tanna takes…