The ancient Christian Apostolic Tradition (c. 200 A.D.) described a "ceremony taking place during the Easter Vigil at which two holy oils were blessed and one was consecrated.Balsam is poured into the oil, which gives it a sweet smell intended to remind those who encounter it of the "odor of sanctity" to which those who are marked with it, are called to strive.[15] The service is a 1967 restoration of the rite recorded in the early 200s by the historian Hippolytus who writes of a ceremony taking place during the Easter Vigil at which two holy oils were blessed and one was consecrated.The change took place not only due to the large crowds that assembled for the Easter Vigil on Holy Saturday night, but to fully emphasize Christ's institution of the ordained priesthood during what is traditionally called The Last Supper.[3] In the decree renewing this rite Pope Paul VI said “The Chrism Mass is one of the principal expressions of the fullness of the bishop’s priesthood and signifies the closeness of the priests with him.”[3]