From Pope St. John Paul II’s Apostolic Exhortation Familiaris Consortio (1981):
The pastoral care of the regularly established family signifies, in practice, the commitment of all the members of the local ecclesial community to helping the couple to discover and live their new vocation and mission. In order that the family may be ever more a true community of love, it is necessary that all its members should be helped and trained in their responsibilities as they face the new problems that arise, in mutual service, and in active sharing in family life.
This holds true especially for young families, which, finding themselves in a context of new values and responsibilities, are more vulnerable, especially in the first years of marriage, to possible difficulties, such as those created by adaptation to life together or by the birth of children. Young married couples should learn to accept willingly, and make good use of, the discreet, tactful and generous help offered by other couples that already have more experience of married and family life. Thus, within the ecclesial community—the great family made up of Christian families—there will take place a mutual exchange of presence and help among all the families, each one putting at the service of others its own experience of life, as well as the gifts of faith and grace. Animated by a true apostolic spirit, this assistance from family to family will constitute one of the simplest, most effective and most accessible means for transmitting from one to another those Christian values which are both the starting point and goal of all pastoral care. Thus young families will not limit themselves merely to receiving, but in their turn, having been helped in this way, will become a source of enrichment for other longer established families, through their witness of life and practical contribution.
In her pastoral care of young families, the Church must also pay special attention to helping them to live married love responsibly in relationship with its demands of communion and service to life. She must likewise help them to harmonize the intimacy of home life with the generous shared work of building up the Church and society. When children are born and the married couple becomes a family in the full and specific sense, the Church will still remain close to the parents in order that they may accept their children and love them as a gift received from the Lord of life, and joyfully accept the task of serving them in their human and Christian growth.
— Familiaris Consortio 69