33 And so, We recommend from a paternal and solicitous heart that priests, who constitute Our greatest joy and Our crown in the Lord, be mindful of the power they have received from the bishop who ordained them—the power of offering sacrifice to God and of celebrating Mass for the living and for the dead in the name of the Lord. (79) We recommend that they celebrate Mass daily in a worthy and devout fashion, so that they themselves and the rest of the faithful may enjoy the benefits that flow in such abundance from the Sacrifice of the Cross. In doing so, they will also be making a great contribution toward the salvation of mankind.
Source: Mysterium Fidei (Vatican.va)