COMMON AND MINISTERIAL PRIESTHOOD
... the Decree of the Second Vatican Council on the Ministry and Life of Priests, Presbyterorum ordinis, says: "For, through the apostolic proclamation of the Gospel, the People of God is called together and assembled so that when all who belong to this People have been sanctified by the Holy Spirit, they can offer themselves as "a sacrifice, living, holy, pleasing to God' (Rm 12: 1). Through the ministry of priests the spiritual sacrifice of the faithful is made perfect in union with the sacrifice of Christ, the sole Mediator.
(Benedict XVI, Audience, 24 June 2009)