The Church is

…the holy Church (Ephesians 5:27), the community of the saints (1 Corinthians 14:33), and its members are called to be saints (Romans 1:7), sanctified in Jesus Christ (1 Corinthians 1:2), chosen and set apart before the foundation of the world (Ephesians 1:4). The object of their calling in Jesus Christ, and of their election before the foundation of the world, was that they should be holy and without blemish (Ephesians 1:4). Christ had surrendered his body to death that he might present his own holy and without blemish and unreproveable before before him (Colossians 1:22). The fruit of their liberation from sin through the death of Christ is that whereas they once surrendered their members servants to iniquity, they may now use them in the service of righteousness unto sanctification (Romans 6:19-22).  

Dietrich BonhoefferThe Cost of Discipleship1961 edition, 305.