"The primordial model of the family is to be sought in God himself, in the Trinitarian mystery of his life. The divine "We" is the eternal pattern of the human "we", especially of that "we" formed by the man and the woman created in the divine image and likeness... Man is created "from the very beginning" as male and female: the life of all humanity - whether of small communities or of society as a whole - is marked by this primordial duality."