Evangelii Nuntiandi §29

29. But evangelization would not be complete if it did not take account of the unceasing interplay of the Gospel and of man's concrete life, both personal and social. This is why evangelization involves an explicit message, adapted to the different situations constantly being realized, about the rights and duties of every human being, about family life without which personal growth and development is hardly possible,[60] about life in society, about international life, peace, justice and development- a message especially energetic today about liberation.

60. Cf. Second Vatican Ecumenical Council, Pastoral Constitution on the Church in the Modern World Gaudium et Spes, 47-52: AAS 58 (1966): pp. 1067-1074; Paul VI, Encyclical Letter Humanae Vitae: AAS 60 (1968), pp. 481-503.