Major communions of the 4th-5th centuries Communion Primary centers Roman Empire and western Europe Rome, Alexandria, Constantinople Church of the East Syria, … See more

The First Council of Nicaea (325) and the First Council of Constantinople (381) were a part of what would later be called the first seven Ecumenical Councils, which span 400 years of church history.
First Council of Nicaea
The See more

The Church Fathers, Early Church Fathers, or Fathers of the Church are the early and influential theologians and writers in the Christian Church, particularly those of the first five centuries of Christian history. The term is used of writers and teachers of the … See more

In 331, Constantine I commissioned Eusebius to deliver fifty Christian Bibles for the Church of Constantinople. Athanasius (Apol. Const. 4) … See more

Under Galerius
In April 311, Galerius, who had previously been one of the leading figures in the persecutions, See more

Desert Fathers
The Desert Fathers were early monastics living in the Egyptian desert; although they did not write as much, their influence was also great. Among them are St. Anthony the Great and St. Pachomius. A great number of their … See more

After legalisation in 313, the Church inside the Roman Empire adopted the same organisational boundaries as the empire: geographical provinces, called dioceses, corresponding to … See more