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What the Early Church Really Taught

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What has the church taught about just war through history?

Church & Practice

What did the early Church teach about involvement in government?

Church & Practice

What would the early Church fathers have thought of representative government through democracy?

Church & Practice

Did early Christians serve in the Roman army?

Church & Practice

What did early Christians teach about pacifism?

Church & Practice

What is the "soldier of Christ" (miles Christi) in early Christianity?

Church & Practice

How did Ambrose and Augustine develop Christian just war thinking?

Church & Practice

What did Basil of Caesarea teach about killing in war?

Church & Practice

Did the early Church believe in sola scriptura?

Scripture & Tradition

What was the rule of faith in the early Church?

Scripture & Tradition

How did the early Church use the rule of faith to identify heresy?

Scripture & Tradition

What did the early Church believe about baptism?

Sacraments

How did the Reformers understand justification vs. Rome?

Salvation & Grace

What did 2nd-century Fathers believe about Christ's return?

Christ & Trinity

What do the Bible and church history teach about hell?

Salvation & Grace

Women in leadership: what did the early Church actually practice?

Church & Practice

Augustine vs. Pelagius: what was really at stake?

Salvation & Grace

What is dispensationalism — arguments for and against?

Contested Claims

The already/not yet Kingdom of God: biblical and historical support

Christ & Trinity

Final judgment according to works vs. salvation by grace

Salvation & Grace

The Book of Enoch: what is it and why wasn't it included in the Bible?

Scripture & Tradition

Compassion and care for the poor through church history

Church & Practice

Did the early church practice infant baptism?

Sacraments

What did the first Christians believe about the Eucharist?

Sacraments

What did early Church Fathers teach about confession and absolution?

Sacraments

What did medieval theologians teach about the Mass?

Sacraments

How did the Reformers change the theology of baptism?

Sacraments

What did the earliest Christians believe about salvation?

Salvation & Grace

What did Christians teach about predestination?

Salvation & Grace

What is the history of the doctrine of original sin?

Salvation & Grace

Was sola fide a 16th-century innovation?

Salvation & Grace

Did the early church believe in sola fide?

Salvation & Grace

Did the early church believe in praying a prayer of salvation?

Salvation & Grace

How did Aquinas understand justification compared to Luther?

Salvation & Grace

What are the 5 solas of the Reformation?

Salvation & Grace

What did the Reformers teach about sola gratia (grace alone)?

Salvation & Grace

What did the Reformers teach about solus Christus (Christ alone)?

Salvation & Grace

What did the Reformers teach about soli Deo gloria (glory to God alone)?

Salvation & Grace

How did early Christians determine which books belonged in the Bible?

Scripture & Tradition

Was the Gospel of Thomas accepted by the early church?

Scripture & Tradition

What are the Gnostic gospels, and why did the early church reject them?

Scripture & Tradition

What criteria did the early church use to determine which books belonged in the New Testament?

Scripture & Tradition

Did any early Christians consider the Gospel of Peter authoritative?

Scripture & Tradition

What did early church fathers teach about Gnosticism?

Scripture & Tradition

What did the Reformers teach about Scripture's authority?

Scripture & Tradition

How did the Filioque controversy develop?

Scripture & Tradition

How did the early church understand the authority of church councils?

Scripture & Tradition

What role did the creeds play in defining early Christian orthodoxy?

Scripture & Tradition

How reliable is the New Testament canon?

Scripture & Tradition

How did early Christians interpret the Trinity?

Christ & Trinity

How did Christology develop from 100–500 AD?

Christ & Trinity

What did the Council of Nicaea actually decide?

Christ & Trinity

Was Jesus divine or a created being?

Christ & Trinity

How did the Filioque controversy develop?

Christ & Trinity

What did the Church Fathers say about Mary?

Church & Practice

How did early Christians understand the role of bishops?

Church & Practice

What did medieval theologians teach about purgatory?

Church & Practice

Was early Christian worship liturgical or informal?

Church & Practice

Did the early church observe a liturgical calendar?

Church & Practice

Was the early church's structure episcopal, presbyterian, or congregational?

Church & Practice

Did early Christians make the sign of the cross and other physical gestures in worship?

Church & Practice

What did early Christians believe about tithing?

Church & Practice

How did the economic order of early Christianity differ from modern capitalism?

Church & Practice

What did early Christians believe about moving to a new place?

Church & Practice

Did the early Church have a pope?

Contested Claims

What did Calvin teach about assurance of salvation?

Contested Claims

How did Luther's view of law and gospel differ from medieval teaching?

Contested Claims

What did the early Church actually teach about the Lord's Supper?

Contested Claims

Is Augustine the originator of original sin?

Contested Claims

Did the early church venerate icons?

Contested Claims

Did the early church pray to or invoke the saints?

Contested Claims

What did early Christians believe about apostolic succession?

Contested Claims

What did early Christians believe about the papacy before Constantine?

Contested Claims

Do the Gnostic gospels reveal a hidden or suppressed form of early Christianity?

Contested Claims

Did Mary have other children? Perpetual virginity and the brothers of Jesus

Contested Claims

Did Jesus exist historically, and is the resurrection factual?

Contested Claims

What did Augustine teach about the problem of evil?

Philosophy

How did Boethius reconcile divine foreknowledge with human free will?

Philosophy

What are Aquinas's Five Ways — proofs for God's existence?

Philosophy

How did Anselm's ontological argument work, and was it accepted?

Philosophy

What did Augustine teach about time and creation?

Philosophy

How did Christian thinkers respond to Aristotle's philosophy in the medieval period?

Philosophy

What is natural law and how did Aquinas define it?

Philosophy

Did Justin Martyr believe Greek philosophy prepared the world for the Gospel?

Philosophy

What did Origen teach about the pre-existence of souls, and why was it condemned?

Philosophy

How did William of Ockham's nominalism challenge scholastic theology?

Philosophy

What did Pseudo-Dionysius teach about knowing and naming God?

Philosophy

How did Aquinas understand the relationship between faith and reason?

Philosophy

What did medieval thinkers teach about the immortality of the soul?

Philosophy

How did Duns Scotus and Aquinas differ on the primacy of will vs. intellect in God?

Philosophy

Did the early Church teach a literal millennium in Revelation 20?

Eschatology

What did the early Church teach about the Second Coming of Christ?

Eschatology

Did the early Church expect an imminent return of Christ?

Eschatology

How did Augustine's amillennialism reshape the church's view of the end times?

Eschatology

What did the Reformers teach about eschatology and the last days?

Eschatology

Did the early Church believe in a rapture?

Eschatology

What did early Christians believe about the resurrection of the body?

Eschatology

What did the Church Fathers teach about the Antichrist?

Eschatology

How did early Christians interpret the Book of Revelation?

Eschatology

What is the history of premillennialism, amillennialism, and postmillennialism?

Eschatology

Why did Jesus teach in parables?

Teaching & Parables

Why did Jesus speak in parables to hide meaning from some listeners?

Teaching & Parables

What did the Church Fathers teach about the meaning of Jesus's parables?

Teaching & Parables

How did early Christians interpret the Parable of the Good Samaritan?

Teaching & Parables

What did Origen and Augustine teach about allegorical interpretation of parables?

Teaching & Parables

How did the early Church teach new believers? (catechesis)

Teaching & Parables

What did the Didache teach about Christian instruction and formation?

Teaching & Parables

How did medieval schools and monasteries approach biblical education?

Teaching & Parables

What did early Christians teach about preaching and proclamation?

Teaching & Parables

How did Reformation-era preachers approach biblical teaching and preaching?

Teaching & Parables

Who were the Apostolic Fathers?

Apostolic Fathers

What did the Apostolic Fathers teach about the Christian Bible and Scripture?

Apostolic Fathers

How does Apostolic Fathers scholarship connect to biblical history?

Apostolic Fathers

What do the Apostolic Fathers reveal about early church history and worship?

Apostolic Fathers

What did Ignatius of Antioch teach about the Church and bishops?

Apostolic Fathers

What did Polycarp and Clement teach about Christian living?

Apostolic Fathers

How did church history shape the development of Christian doctrine?

Church & Practice

How does biblical history connect to the testimony of the early Church Fathers?

Scripture & Tradition

What was early Christianity like, including its relation to Judaism?

Church & Practice

Does the Bible teach that baptism causes regeneration or salvation?

Sacraments

What did the early Church teach about anger and controlling the passions?

Inner Life

What did the Fathers teach about pride as the root of all sin?

Inner Life

How did early Christians understand grief and mourning?

Inner Life

What did the early Church teach about marriage?

Ethics & Sexuality

What does Christian tradition say about the dignity and value of a wife's domestic work — cooking, homemaking, raising children?

Ethics & Sexuality

Is celibacy holier than marriage? What did the Fathers say?

Ethics & Sexuality

Did the early Church allow divorce and remarriage?

Ethics & Sexuality

Did the early Church teach that the body is good or evil?

Ethics & Sexuality

What did the early Church teach about same-sex relationships?

Ethics & Sexuality

What did the church fathers teach about creation: literal days, figurative, or instant?

Scripture & Tradition

Who is Satan in the Bible, and what role does he play?

Eschatology

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