Catechism of the Catholic Church

1267 Baptism makes us members of the Body of Christ: "Therefore . . . we are members one of another." ⁷² Baptism incorporates us into the Church. From the baptismal fonts is born the one People of God of the New Covenant, which transcends all the natural or human limits of nations, cultures, races, and sexes: "For by one Spirit we were all baptized into one body." ⁷³

1268 The baptized have become "living stones" to be "built into a spiritual house, to be a holy priesthood." ⁷⁴ 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." ⁷⁵ Baptism gives a share in the common priesthood of all believers.

1269 Having become a member of the Church, the person baptized belongs no longer to himself, but to him who died and rose for us. ⁷⁶ From now on, he is called to be subject to others, to serve them in the communion of the Church, and to "obey and submit" to the Church's leaders, ⁷⁷ holding them in respect and affection. ⁷⁸ Just as Baptism is the source of responsibilities and duties, the baptized person also enjoys rights within the Church: to receive the sacraments, to be nourished with the Word of God and to be sustained by the other spiritual helps of the Church. ⁷⁹

1270 "Reborn as sons of God, [the baptized] must profess before men the faith they have received from God through the Church" and participate in the apostolic and missionary activity of the People of God. ⁸⁰