"All the good works in the world are not equal to the Holy Sacrifice of the Mass because they are the works of men; but the mass is the work of God. Martyrdom is nothing in comparison for it is but the sacrifice of man to God; but the Mass is the sacrifice of God for man"
To share the mission of Jesus as Priest, Prophet and Shepherd. As a priest he prays and celebrates the Eucharist,As a prophet, he preaches and teaches the Gospel of Jesus Christ, and as shepherd, he serves others.
But you are a chosen people, a royal priesthood, a holy nation, God's special possession, that you may declare the praises of him who called you out.