The Prophet Aaron was the brother of Moses. When Moses expressed concern he was not well-spoken, God instructed that his brother Aaron would speak on Moses' behalf, a role he fulfilled through the time of the exodus. Aaron continued to serve as Moses' spokesman, and as the Hebrew religion developed, his role transformed into that of a priest. In this, Aaron was a precursor to the clergy of the Churcha fact which is reflected in Aaron's priestly vestments.
He holds the miraculous budded staff and carries a jar of manna, on which is depicted the Virgin Theotokos. This points to Mary as the holder of the true heavenly Manna—Jesus Christ—whose Body we receive as Bread in the Eucharist. He is commemorated on March 12, and also on the Sunday Before the Nativity.