The Lord compared himself to the stone which the builders rejected, but which was made into the corner-stone. This temple, symbolized in places of worship built out of stone, is praised by the Fathers and, not without reason, is compared in the liturgy to the Holy City, the New Jerusalem. As living stones we here on earth are built into it. In the celebration of the Eucharist these may most fittingly be offered to the Father along with the body of the Lord. By Baptism they share in the priesthood of Christ, in his prophetic and royal mission.
Baptism gives a share in the common priesthood of all believers.
The whole community of believers is, as such, priestly. The faithful exercise their baptismal priesthood through their participation, each according to his own vocation, in Christ's mission as priest, prophet, and king.