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Bible studies, church history, systematic theology, and Christian apologetics by Dr. Peter J. Carter, D.Min.

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Category: Church History

Discover the rich history of Christianity, from the early church fathers to the Reformation and modern era. Learn how historical events and figures have shaped the faith we practice today.

Gnosticism: The Ancient Heresy That Co-Opted Christianity

Posted on December 24, 2025March 16, 2026 by Dr. Peter J. Carter

Gnosticism was a pre-Christian mystical worldview that co-opted Christian language. Explore its emanation theology, the Demiurge, and how the apostle John confronted it.

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Why Vatican II Still Matters

Posted on December 23, 2025March 16, 2026 by Dr. Peter J. Carter

Vatican II reshaped Catholicism and launched the ecumenical movement. A Protestant historical analysis of the Council's strategic shift, internal divide, and lasting impact.

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The Reformation and the Five Solas: What the Reformers Recovered

Posted on December 20, 2025March 16, 2026 by Dr. Peter J. Carter

Discover the five solas of the Protestant Reformation: Sola Scriptura, Sola Fide, Sola Gratia, Solus Christus, and Soli Deo Gloria. Learn what they mean and why they still matter.

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The Council of Nicaea: When the Church Defined the Faith

Posted on December 17, 2025March 16, 2026 by Dr. Peter J. Carter

Explore the Council of Nicaea in 325 AD, the Arian controversy, the Nicene Creed, and why this pivotal moment in church history still matters for every Christian today.

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Protestant vs. Catholic Theology: The Structural Divide

Posted on December 16, 2025March 16, 2026 by Dr. Peter J. Carter

The Reformation divide is structural: justification as finished forensic declaration vs. ongoing sacramental process. Understanding why this difference changes everything.

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How East and West Shaped Christian Theology

Posted on December 11, 2025March 16, 2026 by Dr. Peter J. Carter

Eastern mysticism and Western legal clarity shaped two distinct theological traditions. Understand how these mindsets influenced Scripture, governance, and the East-West split.

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Nero and Paul: Power Fades, Character Remains

Posted on December 7, 2025March 16, 2026 by Dr. Peter J. Carter

Nero sat in judgment over Paul. Today men name dogs after Nero and sons after Paul. A study in how power fades while character endures across the centuries.

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The Early Church Councils: How Orthodoxy Was Defined

Posted on December 1, 2025March 16, 2026 by Dr. Peter J. Carter

From Nicaea to Chalcedon, the early church councils defined the core doctrines of the Christian faith. Their decisions still shape orthodoxy today.

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About the Author

Dr. Peter J. Carter

Dr. Peter J. Carter is a theologian, author, and the founder of Theology in Focus. He holds a D.Min. with a concentration in theology and apologetics and has spent over two decades teaching, preaching, and writing to make theology accessible to every believer.

His work bridges the gap between the academy and the church, bringing rigorous scholarship to the service of faith. He is the author of several books on systematic theology and church history.

Learn more about Dr. Carter

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  • Already Judged: Why John 3:17-18 Cannot Be Reduced to a 'Do Better' Gospel
  • Guided by Elimination: What Paul's Closed Doors Teach About Divine Guidance
  • The Holiness of God and the Death of Uzzah
  • Saved by Faith Alone, But Not by a Faith That Is Alone
  • Who Gets to Select? The Problem of Selective Patristic Citation

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  1. Kevin Driscoll on Gnosticism: The Ancient Heresy That Co-Opted Christianity
  2. Nathan Torres on The Problem of Evil: A Christian Response
  3. Laura Simmons on Three Christian Views of Hell
  4. Robert J. Maxwell on Sola Scriptura: The Final Court of Appeal
  5. Catherine Walsh on Two-Track Diffusion of Christian Doctrine
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Popular Posts

  • Already Judged: Why John 3:17-18 Cannot Be Reduced to a 'Do Better' GospelMay 3, 2026
  • Guided by Elimination: What Paul's Closed Doors Teach About Divine GuidanceApril 21, 2026
  • The Holiness of God and the Death of UzzahApril 21, 2026
  • Saved by Faith Alone, But Not by a Faith That Is AloneApril 6, 2026
  • Who Gets to Select? The Problem of Selective Patristic CitationMarch 31, 2026

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