 The Oil of Catechumens is used to people immediately before baptism, whether they are infants or adult catechumens.In the early Church converts seeking baptism, known as "catechumens", underwent a period of formation known as catechumenate, and during that period of instruction received one or more anointings with the oil of cathecumens for the purpose of expelling evil spirits.Before the 1968 revision of the rite of ordination the ordaining bishop anointed the hands of the new priest with the Oil of Catechumens, The older form is now used only in ordaining members of associations, such as the Priestly Fraternity of Saint Peter, dedicated to the preservation of the pre-Vatican II liturgy.