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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

Three Views on the Lord's Supper: Transubstantiation, Consubstantiation, and the Memorial View

Posted on November 12, 2025March 16, 2026 by Dr. Peter J. Carter

Explore the three major Christian views on the Lord's Supper -- transubstantiation, consubstantiation, and the memorial view -- and why the symbolic position best honors the finished work of Christ.

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Understanding Justification by Faith

Posted on October 8, 2025March 16, 2026 by Dr. Peter J. Carter

At the heart of the gospel stands a doctrine that changed the world: justification by faith alone in Christ alone. Understand what Paul meant and why it still matters.

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Restoring What Was Lost: The Work Started on Calvary (Part 4 of 16)

Posted on November 3, 2024March 16, 2026 by Dr. Peter J. Carter

Series: Restoring What Was Lost, Part 4 of 16 Scripture Text: John 19:30 For three weeks, we have surveyed the damage. We have examined the inheritance Adam forfeited, the slavery into which humanity was sold, and the illegitimate rule of Satan over this fallen world. The picture has been grim, and intentionally so. You cannot...

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Restoring What Was Lost: Satan Is a Squatter (Part 3 of 16)

Posted on October 27, 2024March 16, 2026 by Dr. Peter J. Carter

Series: Restoring What Was Lost, Part 3 of 16 Scripture Texts: Genesis 3:17-19; Luke 4:6 Over the past two weeks, we have traced humanity’s fall from two vantage points: first, the forfeiture of Adam’s inheritance, and second, the selling of humanity into slavery to sin. But there is a third dimension to the catastrophe of...

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Restoring What Was Lost: Adam Sold Humanity to Be the Slave of Sin (Part 2 of 16)

Posted on October 20, 2024March 16, 2026 by Dr. Peter J. Carter

Series: Restoring What Was Lost, Part 2 of 16 Scripture Text: Romans 3:23 Last week we began our series by examining the inheritance that Adam forfeited in the Garden of Eden, a stewardship over all the earth, lost through disobedience. But the consequences of Adam’s fall did not stop at the loss of property. Something...

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Restoring What Was Lost: Adam Gave Up His Inheritance (Part 1 of 16)

Posted on October 13, 2024March 16, 2026 by Dr. Peter J. Carter

In This Article Toggle Series: Restoring What Was Lost, Part 1 of 16 Scripture Text: Genesis 3:17–19 This article inaugurates a journey through one of the most sweeping narratives in all of Scripture: the story of what humanity lost in the Garden of Eden and how Christ, through His redemptive work, restores every last portion...

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From One God to Many: Humanity's Drift and God's Response

Posted on November 17, 2019March 16, 2026 by Dr. Peter J. Carter

In the beginning, there was no debate about God. Adam walked with Him. Eve heard His voice. Cain and Abel brought their offerings before Him. Noah received His commands face to face. The earliest chapters of human history describe a people who knew God directly, not through ritual, not through religion, but through personal, unmediated...

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Free From the Natural: How God Designed the World and Man's Place Above It

Posted on May 5, 2019March 16, 2026 by Dr. Peter J. Carter

God made this world, and when He made it, He designed it to be self-sustaining. Every system, from the reproduction of trees and birds, to the ecosystems that regenerate continually, to the red blood cells that fight infection and the DNA that checks and repairs itself, was built to function without constant intervention. In every...

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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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Popular Posts

  • Featured image for The Discipline of Studying Church History Honestly - Theology in Focus
    The Discipline of Studying Church History HonestlyMarch 16, 2026
  • Featured image for The Imago Dei: Why Human Life Has Unique Value - Theology in Focus
    The Imago Dei: Why Human Life Has Unique ValueMarch 10, 2026
  • Featured image for Pre-Reformers, Reformers, and the Social Transformation of Late Medieval Europe - Theology in Focus
    Pre-Reformers, Reformers, and the Social Transformation of Late Medieval EuropeFebruary 20, 2026
  • Featured image for The Examined Life: Socrates, Classical Education, and the Birth of the Western Mind - Theology in Focus
    The Examined Life: Socrates, Classical Education, and the Birth of the Western MindFebruary 18, 2026
  • Featured image for Christianity Is Not a Merit System - Theology in Focus
    Christianity Is Not a Merit SystemFebruary 17, 2026

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