The evolution of the doctrine of the infallibility of the Pope in the Catholic beliefs. "An historical contract study"

This study examines the history of the development of the doctrine of infallibility of the Pope (Bishop of Rome) in the Catholic Church, from the Middle Ages to its adoption as a dogmatic constitution, to shed light on the impact of the course of historical events on the crystallization of this doctrine and the conceptual structure upon which it was based. The study concluded that the doctrine of infallibility of the Pope was based on the concept of the Peter theory, and it went through several stages, the most prominent of which was the period of turbulence in the Middle Ages, and criticism in the modern era, and a series of historical events in the nineteenth century contributed to the siege of the papal seat, which prompted Pius The ninth to endorsing the doctrine of infallibility of the Pope to confront these criticisms in the first Vatican Council in 1870 AD, by defining the concept of infallibility in the context of faith education and ethics, and this decision was emphasized in the Second Vatican Council in 1964 AD, but in more detail.