From the historic Council of Nicaea in 325 to the transformative Second Vatican Council in the 20th century, this book offers a deep, clear, and accessible journey through the key moments that shaped the faith, theology, and structure of the Church. Isaac Volpe presents the conflicts, dogmatic definitions, reforms, and tensions that have marked the path of Christianity for over 1,600 years with rigor and passion. Ideal for believers, historians, theologians, and readers interested in understanding how the Church faced each doctrinal, political, and pastoral challenge throughout the centuries. Each council is examined in its historical context, with its main figures and consequences, showing how faith is expressed, debated, and evolves without losing its essential core. An indispensable work for those who wish to understand the present of the Church in light of its most decisive past. Buy this book now and deepen your faith, your knowledge, and your perspective on the history of the ChurchTAGSCatholic Church, ecumenical councils, history of the Church, Catholic theology, Council of Nicaea, Second Vatican Council, Christian doctrine, doctrinal development, ecclesiastical tradition, theological disputes, heresies and reforms, Magisterium of the Church, Church Fathers, early Christianity, history of Christianity, Catholic dogmas, faith and reason, religious studies, theological formation, understanding the faith