Redemptoris Missio §51

⁵¹ A rapidly growing phenomenon in the young churches - one sometimes fostered by the bishops and their Conferences as a pastoral priority - is that of "ecclesial basic communities" (also known by other names) which are proving to be good centers for Christian formation and missionary outreach. These are groups of Christians who, at the level of the family or in a similarly restricted setting, come together for prayer, Scripture reading, catechesis, and discussion on human and ecclesial problems with a view to a common commitment. These communities are a sign of vitality within the Church, an instrument of formation and evangelization, and a solid starting point for a new society based on a "civilization of love." These communities decentralize and organize the parish community, to which they always remain united. They take root in less privileged and rural areas, and become a leaven of Christian life, of care for the poor and neglected, and of commitment to the transformation of society. Within them, the individual Christian experiences community and therefore senses that he or she is playing an active role and is encouraged to share in the common task. Thus, these communities become a means of evangelization and of the initial proclamation of the Gospel, and a source of new ministries. At the same time, by being imbued with Christ's love, they also show how divisions, tribalism and racism can be overcome. Every community, if it is to be Christian, must be founded on Christ and live in him, as it listens to the word of God, focuses its prayer on the Eucharist, lives in a communion marked by oneness of heart and soul, and shares according to the needs of its members (cf. Acts 2:42-47). As Pope Paul VI recalled, every community must live in union with the particular and the universal Church, in heartfelt communion with the Church's pastors and the Magisterium, with a commitment to missionary outreach and without yielding to isolationism or ideological exploitation. And the Synod of Bishops stated: "Because the Church is communion, the new 'basic communities,' if they truly live in unity with the Church, are a true expression of communion and a means for the construction of a more profound communion. They are thus cause for great hope for the life of the Church."