Thursday, September 5, 2013
The third analytical index entry for "Law" in the Compendium of the Social Doctrine of the Church points to no. 33. This appears in chapter one ("God's Plan of Love for Humanity"), section II ("Jesus Christ the Fulfilment of the Father's Plan of Love"), subsection b ("The revelation of trinitarian love"). Among other things, no. 33 grounds human solidarity in a particular kind of unity that reflects the Trinity:
33. The commandment of mutual love, which represents the law of life for God's people,must inspire, purify and elevate all human relationships in society and in politics. “To be human means to be called to interpersonal communion”, because the image and the likeness of the Trinitarian God are the basis of the whole of “human ‘ethos', which reaches its apex in the commandment of love”. The modern cultural, social, economic and political phenomenon of interdependence, which intensifies and makes particularly evident the bonds that unite the human family, accentuates once more, in the light of Revelation, “a new model of the unity of the human race, which must ultimately inspire our solidarity. This supreme model of unity, which is a reflection of the intimate life of God, one God in three Persons, is what we Christians mean by the word 'communion'”.
 Cf. Second Vatican Ecumenical Council, Dogmatic Constitution Lumen Gentium, 9:AAS 57 (1965), 12-14.
 John Paul II, Apostolic Letter Mulieris Dignitatem, 7: AAS 80 (1988), 1666.
 John Paul II, Apostolic Letter Mulieris Dignitatem, 7: AAS 80 (1988), 1665-1666.
 John Paul II, Encyclical Letter Sollicitudo Rei Socialis, 40: AAS 80 (1988), 569.