In this way Aaron paid off a debt to Moses. After the worship of the Golden Calf, that came to pass not without some guilt on Aaron's part, God had decreed that all four of Aaron's sons were to die, but Moses stood up between the living and the dead, and through his prayer succeeded in saving two out of the four. In the same way Aaron now stood up between the living and the dead to ward off from Israel the Angel of Death.
God in His kindness now desired the people once and for all to be convinced of the truth that Aaron was the elect, and his house the house of priesthood, hence he bade Moses convince them in the following fashion. Upon God's command, he took a beam of wood, divided it into twelve rods, bade every prince of a tribe in his own hand write his name on one of the rods respectively, and laid up the rods over night before the sanctuary. Then the miracle came to pass that the rod of Aaron, the prince of the tribe of Levi, bore the Ineffable Name which caused the rod to bloom blossoms over night and to yield ripe almonds. When the people, who all night had been pondering which tribe should on the morrow be proven by the rod of its prince to be the chosen one, betook themselves early in the morning to the sanctuary, and saw the blossoms and almonds upon the rod of Aaron, they were at last convinced that God had destined the priesthood for his house. The almonds, which ripen more quickly than any other fruit, at the same time informed them that God would quickly bring punishment upon those who should venture to usurp the powers of priesthood. Aaron's rod was then laid up before the Holy Ark by Moses. It was this rod, kings used until the time of the destruction of the Temple, when, in miraculous fashion, it disappeared. Elijah will in the future fetch it forth and hand it over to the Messiah.