From Pope St. John Paul II’s Apostolic Exhortation Familiaris Consortio (1981):
Inspired and sustained by the new commandment of love, the Christian family welcomes, respects and serves every human being, considering each one in his or her dignity as a person and as a child of God.
It should be so especially between husband and wife and within the family, through a daily effort to promote a truly personal community, initiated and fostered by an inner communion of love. This way of life should then be extended to the wider circle of the ecclesial community of which the Christian family is a part. Thanks to love within the family, the Church can and ought to take on a more homelike or family dimension, developing a more human and fraternal style of relationships.
Love, too, goes beyond our brothers and sisters of the same faith since “everybody is my brother or sister.” In each individual, especially in the poor, the weak, and those who suffer or are unjustly treated, love knows how to discover the face of Christ, and discover a fellow human being to be loved and served.
In order that the family may serve man in a truly evangelical way, the instructions of the Second Vatican Council must be carefully put into practice: “That the exercise of such charity may rise above any deficiencies in fact and even in appearance, certain fundamentals must be observed. Thus, attention is to be paid to the image of God in which our neighbor has been created, and also to Christ the Lord to whom is really offered whatever is given to a needy person.”163
While building up the Church in love, the Christian family places itself at the service of the human person and the world, really bringing about the “human advancement” whose substance was given in summary form in the Synod’s Message to families: “Another task for the family is to form persons in love and also to practice love in all its relationships, so that it does not live closed in on itself, but remains open to the community, moved by a sense of justice and concern for others, as well as by a consciousness of its responsibility towards the whole of society.”164
163 Apostolicam actuositatem, 8.
164 Cf. Synod of Bishops’ Message to Christian Families (Oct. 24, 1980), 12.
— Familiaris Consortio 64