About Harrison Perkins

Harrison Perkins (PhD, Queen’s University Belfast; MDiv, Westminster Seminary California) is pastor of Oakland Hills Community Church (OPC), a member of the of the Heidelberg Reformation Association, a Senior Research Fellow at the Craig Center for the Study of the Westminster Standards, associate online instructor in church history at Westminster Theological Seminary, a visiting lecturer in systematic theology at Edinburgh Theological Seminary, and author of Reformed Covenant Theology: A Systematic Introduction. Meet all the Heidelberg contributors»

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What Is Missio Dei?

What is God doing in creation? What is He aiming to achieve? The answer shapes how we think about what the world needs, what the church’s purpose is, and what it means for Christians to live on mission. The answer also has . . . Continue reading →

Book Review

Review: Ancient Wisdom for the Care of Souls: Learning the Art of Ministry from the Christian Fathers By Coleman M. Ford and Shawn J. Wilhite

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The church has had pastors since our very beginning. Although that observation may seem obvious, we may yet overlook the important point that the pastoral craft is very ancient. We likely often envision the pastoral role only in terms of our modern . . . Continue reading →

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OPC General Assembly 2025

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It is convocation season again! Each summer, Reformed denominations have their national gatherings to weigh, deliberate, and even celebrate various issues going on throughout the churches. The Orthodox Presbyterian Church’s General Assembly met June 4–10 at Trinity Christian College just outside Chicago. . . . Continue reading →

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The Cradle Of Christian Truth: Apostles’ Creed (Part 19)—Life Everlasting. Amen

When I was in college, I worked in a warehouse that refurbished science kits for elementary and middle schools. As part of my job, I had to replace used-up supplies for various experiments, like the used-up tape, staples, or flour. One summer, . . . Continue reading →

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The Cradle Of Christian Truth: Apostles’ Creed (Part 18)—The Resurrection of the Body

In one elementary school science lesson, we were given bug eggs that we were supposed to help get through the various life-cycle stages. However successful I was at that endeavor with those particular bugs, the principle is something I think we all . . . Continue reading →

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The Sweetness of Psalm Singing

Our first point initially then helps us see the rich blessing of corporate worship. This spirit-fullness requires the church and is not an individualistic experience. This singing is addressing one another, namely other people. The style of worship where you blend into a . . . Continue reading →

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The Cradle Of Christian Truth: Apostles’ Creed (Part 16)—The Communion of the Saints

The phrase often goes around that “blood is thicker than water.” One of the ways people use this phrase is to mean that family relationships are more important than relationships made by baptism. In other words, when a family member does something . . . Continue reading →

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The Cradle Of Christian Truth: Apostles’ Creed (Part 13)—From there he will come to judge the living and the dead

Casablanca is one of the most famous movies in cinematic history, leaving us with more than its fair share of artifacts ingrained in cultural memory even eighty years later. Humphrey Bogart alone left us with a stack of lines most of us . . . Continue reading →

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It Was Christ All Along

The final layer is that Christ is the substance of the covenant of grace since He was always its Mediator….  Moreover, the New Testament explicitly designates Christ as the Savior who was active in the Old Testament. Harrison Perkins | Reformed Covenant . . . Continue reading →

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The Cradle Of Christian Truth: Apostles’ Creed (Part 12)—He Ascended into Heaven and is Seated at the Right Hand of God the Father Almighty

It is a common bug of humanity that we do not like saying goodbye. We even have stock phrases like, “I’m bad at goodbyes,” or, “Let’s say ‘see you later’ rather than ‘goodbye.’” Even “Absence makes the heart grow fonder,” as true . . . Continue reading →

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Christ’s Resurrection Is Non-Negotiable

Without Christ’s resurrection, Christian hope disappears. Among many indispensable articles of our faith, Christ’s resurrection crowns the list. Part of the reason for its critical role is because we worship the risen Christ, who is God the Son in power with all . . . Continue reading →