This study examines the communication habits of the pilgrim Church with focus upon Vatican documents on mass media and social communication. Attention is given to the historical context of Vatican Councils I and II. As the Church engaged modernity, it shifted ecclesial organization from closed to become open. This study documents the importance of sociology, especially communication theory and cybernetics for Catholicism today.It is argued that the pivotal event in the Roman Catholic Church's self-exploration for self-awareness and realization was the Second Vatican Council. At that Council, the Church re-examined itself and its own identity to come to grips with the modern world. The teachings of the Council were concerned mainly with the pastoral dimension of the Church and its self-realization. Reflexivity is an important theme of this study as it speaks about understanding the very identity of the modern Church. It is explained that the process of communication within the Roman Catholic Church is itself linked to this insight of reflexivity.The first chapter shows that behind the pilgrim Church lies an emerging vision of the threefold offices of priest, prophet, and king. The history behind the Roman Catholic Church's transition from the First to the Second Vatican Council is provided. John Henry Cardinal Newman influenced nineteenth-century Catholic theology with his own study of the threefold office. In chapter four we return to the threefold office and examine the contribution of John Paul II. It includes an analysis of how the politics of the magisterium shapes Catholic social teaching. Chapter two examines the text and context of the Second Vatican Council's pastoral decree "Inter Mirifica". Chapter three provides a documented history of the Vatican's Pontifical Council for Social Communication and its teachings. Chapter five develops major tenets of a critical analysis of the communication of the post-Vatican II Church: attention is given to the discursive aspects of religious authority, argumentation, bureaucratization, and market culture. Chapter six takes a step towards examining the pragmatics of contemporary Vatican teaching.This study concludes that there are three basic sociological and theological aspects of the pilgrim Church. These include a ritual approach to communication, the generational experience of Catholics and their respective attitudes toward Church teaching, and the important link in the faith's praxis between reflexivity and forming habits of communication