CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 802–806

802 Christ Jesus "gave himself for us to redeem us from all iniquity and to purify for himself a people of his own" (Titus 2:14).
803 "You are a chosen race, a royal priesthood, a holy nation, God's own people" (1 Pet 2:9).
804 One enters into the People of God by faith and Baptism. "All men are called to belong to the new People of God" (LG 13), so that, in Christ, "men may form one family and one People of God" (AG 1).
805 The Church is the Body of Christ. Through the Spirit and his action in the sacraments, above all the Eucharist, Christ, who once was dead and is now risen, establishes the community of believers as his own Body.
806 In the unity of this Body, there is a diversity of members and functions. All members are linked to one another, especially to those who are suffering, to the poor and persecuted.