Heresies & Theological Movements

Waldensianism / Waldenses

12th century - present (ongoing in Reformed churches)

Core Belief

Return to apostolic poverty and simplicity. Rejection of papal authority and Church hierarchy. Scripture alone (in vernacular) is authority. Priests are unnecessary; any believer can preach and administer sacraments. Rejection of purgatory, indulgences, saint worship, and oaths. Emphasis on personal Bible study and moral purity.

Orthodox Response

Papal authority is valid. The priesthood is necessary for sacramental validity. The Church's structure and hierarchy are divinely ordained. The Vulgate (Latin Bible) is the approved text. Purgatory and indulgences are legitimate.

Condemnation

Condemned by Council of Lyon III (1179) and Pope Lucius III (1184). Declared heretical. Waldensians persecuted but went underground. Survived in Alpine regions (especially Piedmont). Some Waldensians later joined the Protestant Reformation.

Legacy

Waldensians are sometimes viewed as pre-Reformation Protestants. They survived centuries of persecution. Modern Waldensian Church (now part of Reformed denominations in Italy) traces continuity to medieval movement. Waldensians exemplify lay piety and reform impulses.

Key Figures

Nestorianism

5th century CE (ongoing in Assyrian Church)

Core Belief

Christ's divine and human natures are so distinct that they constitute two separate persons — the divine Logos and the human Jesus. Mary bore the human Jesus, not the divine Son of God, so she should be called Christotokos (Christ-bearer) not Theotokos (God-bearer). The divine and human cooperate in Christ but are not fused into one person.

Orthodox Response

Christ is one person with two natures — divine and human — in hypostatic union (Chalcedonian definition). The subject of all of Christ's actions is the one divine person of the Son. Therefore Mary is Theotokos — the one she bore is truly God.

Condemnation

Council of Ephesus (431 CE). Nestorius deposed and exiled. His supporters formed the Church of the East.

Legacy

The Assyrian Church of the East (often called 'Nestorian') carried Christianity along the Silk Road through Persia, India (Thomas Christians), Central Asia, and China. By the 7th-9th century the Church of the East was arguably the largest Christian body in the world by geographic spread. Modern theological consensus is that Nestorius himself may not have been 'Nestorian' — he affirmed Christ's unity but chose words that lost the argument.

Key Figures

Monophysitism / Miaphysitism

5th century CE (ongoing in Oriental Orthodoxy)

Core Belief

Eutychianism: after the Incarnation, Christ has only one nature — the human nature absorbed into the divine, like a drop of honey in the ocean. Miaphysitism (Oriental Orthodox): Christ has one united nature that is both divine and human — neither confusion nor separation, but genuine union.

Orthodox Response

(Chalcedonian) Christ has two natures, divine and human, without confusion, change, division, or separation (the four Chalcedonian adverbs). The Chalcedonian churches consider Oriental Orthodox miaphysitism a different theological expression, not strict monophysitism.

Condemnation

Eutychianism condemned at Council of Chalcedon (451 CE). Oriental Orthodox miaphysitism has never been formally reconciled with Chalcedonian churches though recent ecumenical dialogues have made significant progress.

Legacy

~60 million Oriental Orthodox Christians (Coptic, Ethiopian Tewahedo, Armenian Apostolic, Syriac Orthodox, Malankara) hold miaphysite Christology. Modern ecumenical scholarship increasingly distinguishes Oriental Orthodox miaphysitism from heretical monophysitism. The Coptic Church's theology shaped early Christian monasticism worldwide.

Key Figures

Kharijism

7th century CE onwards (ongoing splinter groups)

Core Belief

The Quran's commands are absolute — those who commit major sins lose their faith. A Muslim who commits grave sin is an unbeliever (kafir), even if they believe in God. Any morally upright Muslim can become caliph (no dynastic requirement). Severe puritanism and literalism in Islamic law.

Orthodox Response

Major sins do not remove one from Islam. The Quran and Sunnah are interpreted through disciplined jurisprudence (fiqh), not literal legalism. The caliphate should follow established principles. Reason and scholarship play a role in legal interpretation.

Condemnation

Kharijites split from the ummah in early Islamic history. The majority view (Sunni and Shia both) condemned Khariji doctrine and practices. Kharijite violence and extremism were rejected. Modern extremist groups (ISIS, AQAP) are sometimes compared to Kharijites.

Legacy

Kharijism influenced development of Islamic jurisprudence (fiqh) by posing radical challenges to which orthodoxy had to respond. Ibadi Islam (surviving denomination, ~1-1.5 million) traces roots to early Khariji movements but evolved differently. Modern jihadist movements are sometimes compared to Kharijites.

Key Figures

Nastika Schools (Rejecting Vedas)

Ancient onwards (ongoing traditions)

Core Belief

Rejection of the authority of the Vedas (sacred Hindu texts). Different schools: Buddhism rejects Vedas, Vedic rituals, and concept of Atman. Jainism rejects Vedas and concept of Ishvara (supreme God). Charvaka (materialism) rejects Vedas, gods, and afterlife. These are considered 'nastika' (heretical) by Astika (Vedic-accepting) schools.

Orthodox Response

The Vedas are eternal, infallible revelation (shruti). They form the foundation of Hindu philosophy. Acceptance of Vedic authority distinguishes Astika (orthodox) from Nastika (heterodox) schools.

Condemnation

Astika schools (Vedanta, Samkhya, Yoga, Nyaya, Vaisheshika, Mimamsa) rejected Nastika teachings. However, these debates were largely philosophical, not involving persecution. Buddhism and Jainism became religions in their own right rather than remaining heresies within Hinduism.

Legacy

Buddhism and Jainism arose partly as reactions to Vedic religion. The classification of Nastika/Astika became a traditional Hindu taxonomy but was not always polemical. Modern Hinduism includes diverse views on Vedic authority. Some Hindu reformers (19th century) challenged Vedic literalism while remaining Hindu.

Key Figures