The document discusses how God created humanity with a heart and desires that reach beyond the material world to thirst for union with others, as reflected in God's nature as a Trinity of persons in communion. It explores how the first humans' experience of being alone yet in God's image led to the creation of woman to be a fitting helper and companion for man, so that the two could become "one flesh" and satisfy the human heart's longing for interpersonal union. The document argues this divine plan establishes marriage as fundamental to human fulfillment and the path to satisfy our God-given desire for communion.