The Councils
Heresies and Responses
Doctors of the Church
Christological Terms
Key Church Figures
100

The Council of Nicaea (325) condemned this heresy

What is Arianism?

100

This heresy denied the full divinity of Christ.

What is Arianism?

100

This Doctor earned the title 'Hammer of the Arians.'

Who is St. Ambrose?

100

This term means 'God becoming man.'

What is the Incarnation?

100

Known as 'Golden-Mouthed' for eloquent preaching.

Who is St. John Chrysostom?

200

The Council of Ephesus declared Mary as this title.

What is Theotokos?

200

This heresy taught salvation came through secret knowledge.

What is Gnosticism?

200

The 'Doctor of Grace.'

Who is St. Augustine?

200

Describes Christ as one Person with two natures.

What is the hypostatic union?

200

Known as 'The Theologian.'

Who is St. Gregory Nazianzen?

300

The Council of Chalcedon (451) taught Christ is one Person in these two natures.

What are divine and human?

300

This heresy claimed Christ had only one nature.

What is Monophysitism?

300

Translator of the Latin Vulgate.

Who is St. Jerome?

300

The Greek title meaning 'God-bearer.'

What is Theotokos?

300

Opposed Gnosticism and wrote Against Heresies

Who is St. Irenaeus?

400

This Council added the phrase 'to become man.'

What is Constantinople I (381)?

400

This heresy denied the necessity of grace for salvation.

What is Pelagianism?

400

Strengthened papal authority and monastic discipline.

Who is St. Gregory the Great?

400

'Begotten, not made' affirms this relationship.

What is the Son’s co-eternity with the Father?

400

Defended the Trinity against Arianism.

Who is St. Athanasius?

500

Pope Leo I condemned the 'Robber Council' held in this city.

What is Ephesus (449)

500

This heresy said sacraments by sinful clergy were invalid.

What is Donatism?

500

Chief defender of the Nicene Creed and author of On the Incarnation.

Who is St. Athanasius?

500

The phrase 'without confusion or division' comes from this council’s definition.

What is the Council of Chalcedon?

500

The Emperor who convened the Council of Chalcedon.

Who is Marcian?

M
e
n
u