This article discusses the Council of Ephesus, whose purpose was address the teaching of Nestorius that came to be known as Nestorianism, a teaching that stressed the independence of the divine and human natures of Christ. The article considers the Council's setting, purpose, major characters, and the nature and results of the conflict.

The author provides a preview of the Pelagian controversy from early church history, which involved Augustine and Pelagius (a later development of Pelagianism became known as semi-Pelagianism). The controversy in question centres around the nature of the fall of man, saving grace, and the will of man.

This article on church history looks at all the three Councils of Constantinople, which dealt with the deity of the Holy Spirit and the humanity of Christ. It also discusses the Council of Ephesus and the Council of Chalcedon, which dealt with the two natures of Christ.