"Christian revelation . . . Promotes deeper understanding of the laws of social living." The Church receives from the Gospel the full revelation of the truth about man. When she fulfills her mission of proclaiming the Gospel, she bears witness to man, in the name of Christ, to his dignity and his vocation to the communion of persons. She teaches him the demands of justice and peace in conformity with divine wisdom.
Source: Catechism of the Catholic Church (Vatican.va)