21 Likewise, just as home life, when the law of Christ is observed, flowers in true felicity, so, when the Gospel is cast aside, does it perish miserably and become desolated by vice: "He that seeketh the law, shall be filled with it: and he that dealeth deceitfully, shall meet with a stumbling block therein" ( Ecclesiasticus XXXII: 19). What can there be on earth more serene and joyful than the Christian family? Taking its origin at the Altar of the Lord, where love has been proclaimed a holy and indissoluble bond, the Christian family in the same love nourished by supernal grace is consolidated and receives increase.
Source: Sertum Laetitiae (Vatican.va)