The sixth Sacrament is Holy Orders. There are seven orders: priesthood,
deaconate, subdeaconate, acolyte, exorcist, lector, and porter. Tonsure
(clerk-ship, clericatus) is not an order, but a formal profession of giving
one's life to the divine ministry. The episcopate is rather a dignity than
an order.32 The matter of this Sacrament is that matter which is handed
over to the candidate at the conferring of the order. Thus, priesthood is
conferred by the handing over of the chalice, and so each order is
conferred by the handing over of that matter which in a special way
pertains to the ministry of that particular order. The form of this
Sacrament is this: "Receive the power to offer sacrifice in the Church for
the living and the dead." And similarly power is conferred in the other
orders. The minister of this Sacrament is the bishop who confers the
orders. The effect of this Sacrament is an increase of grace for the
performance of the duties of a worthy minister of Christ.
Concerning this Sacrament was the error of Arius, who taught that the
priesthood could not be distinguished from the episcopate.