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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: Systematic Theology

Dive into the organized study of Christian doctrines, including the nature of God, the Trinity, creation, and the church. Understand how biblical teachings form a cohesive system of faith

Sola Scriptura: The Final Court of Appeal

Posted on January 2, 2026March 16, 2026 by Dr. Peter J. Carter

Every Christian operates from a final authority: church tradition, personal feelings, or Scripture. Only one is the ultimate court of appeal. A strongly Reformed defense of Sola Scriptura.

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Three Christian Views of Hell

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

Eternal conscious torment, annihilationism, and universalism: three Christian views of hell examined fairly with a Reformed assessment of the biblical evidence.

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What Is Dispensationalism?

Posted on December 30, 2025March 16, 2026 by Dr. Peter J. Carter

Dispensationalism organizes redemptive history into distinct dispensations and peoples. Compare it with covenant theology and the unity of God's saving work.

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What Is Systematic Theology? An Introduction

Posted on December 29, 2025March 16, 2026 by Dr. Peter J. Carter

Discover what systematic theology is, how it works, and why every Christian needs it. Explore the major doctrines of God, Christ, the Spirit, salvation, the church, and the last things.

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Justification and Sanctification: Don't Collapse Them

Posted on December 28, 2025March 16, 2026 by Dr. Peter J. Carter

Most Christians collapse justification and sanctification into one. Christ accomplished your legal standing; the Spirit applies transformation. Learn why the distinction matters.

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Who Actually Decides Doctrine?

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

Three competing authorities claim the right to define Christian doctrine: the Church, personal feelings, and Scripture. Only one allows correction from outside ourselves.

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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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Lesson 17: The Fruit of the Spirit

Posted on December 14, 2025March 16, 2026 by Dr. Peter J. Carter

Explore Galatians 5:16-26 and the nine fruits of the Spirit. Learn the contrast between the works of the flesh and the fruit of walking by the Spirit in the Christian life.

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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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Recent Posts

  • 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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