Christ's Faithful and the Communion of Saints
From the Catechism of the Catholic Church, Simplified
Sharing in the Threefold Office (871-872)
The Christian faithful, incorporated into Christ by their Baptism and made members of God's People, share in Christ's threefold office as priest, prophet, and king. They are called to exercise God's mission for his Church according to their state (Canon 204).
Because all share in the baptismal rebirth in Christ, there is a true equality in dignity and activity whereby all cooperate in building up the Body (Canon 208).