Catechism of the Catholic Church

The baptized have become "living stones" to be "built into a spiritual house, to be a holy priesthood." By Baptism they share in the priesthood of Christ, in his prophetic and royal mission. They are "a chosen race, a royal priesthood, a holy nation, God's own people, that [they] may declare the wonderful deeds of him who called [them] out of darkness into his marvelous light." Baptism gives a share in the common priesthood of all believers. (1141, 784)