(From Christifidelis Laici 14)
The lay faithful are sharers in the priestly mission, for which Jesus offered himself on the cross and continues to be offered in the celebration of the Eucharist for the glory of God and the salvation of humanity. Incorporated in Jesus Christ, the baptized are united to him and to his sacrifice in the offering they make of themselves and their daily activities (cf. Rom 12:1, 2). Speaking of the lay faithful the Council says: “For their work, prayers and apostolic endeavours, their ordinary married and family life, their daily labour, their mental and physical relaxation, if carried out in the Spirit, and even the hardships of life if patiently borne-all of these become spiritual sacrifices acceptable to God through Jesus Christ (cf. 1 Pt 2:5). During the celebration of the Eucharist these sacrifices are most lovingly offered to the Father along with the Lord’s body. Thus as worshipers whose every deed is holy, the lay faithful consecrate the world itself to God” (Lumen Gentium 34)