3Introduction to the Mystery of the Church is an ecclesiological survey presenting a doctrinal synthesis of the Church. The author's intention is to propose an overview of this mystery in connection with the entirety of the Christian mystery. The book is divided into two major parts, the first presenting the foundations in the Bible and the tradition up to our day, and the second being an explanatory proposal introducing the reader to the Church's definition and personality and concluding with an exposition of the four properties enunciated in the Creed (one, holy, catholic, and apostolic).