There has been much discussion among theologians as to what constitutes the essential matter of this sacrament. Some, e.g. Aureolus and Petavius, held that it consists in the imposition of hands. Others, with St. Thomas, Bellarmine, and Maldonatus, maintain that it is the anointing with chrism. According to a third opinion (Morinus, Tapper) either anointing or imposition of hands suffices. Finally,** the most generally accepted view is that the anointing and the imposition of hands conjointly are the matter.** The “imposition”, however, is not that with which the rite begins but the laying on of hands which takes place in the act of anointing. As Peter the Lombard declares: Pontifex per impositionem manus confirmandos ungit in fronte (IV Sent., dist. xxxiii, n. 1; cf. De Augustinis, “De re sacramentaria”, 2d ed., Rome, 1889, I). The chrism employed must be a mixture of olive oil and balsam consecrated by a bishop. (For the manner of this consecration and for other details, historical and liturgical, see CHRISM.) The difference regarding the form of the sacrament, i.e. the words essential for confirmation, has been indicated above in the description of the rite. The validity of both the Latin and the Greek form is unquestionable. Additional details are given below in the historical outline.