§789
Creed › … › Paragraph 2. the Church - People of God, Body of Christ, Temple of the Holy Spirit
The Church is communion with Jesus
The comparison of the Church with the body casts light on the intimate bond between Christ and his Church. Not only is she gathered around him; she is united in him, in his body. Three aspects of the Church as the Body of Christ are to be more specifically noted: the unity of all her members with each other as a result of their union with Christ; Christ as head of the Body; and the Church as bride of Christ.
Source: Catechism of the Catholic Church (Vatican.va)