Historical theology – What is it?

WHAT DOES THE BIBLE SAY?

Historical theology studies how Christians have understood and taught biblical doctrine throughout the centuries. It is closely connected to church history, as both examine the same events. However, historical theology focuses on how beliefs developed within those events while church history describes the events themselves. Together, they help us see not only what happened but how the church interpreted Scripture.

The book of Acts describes the formation and development of the early church, the basis for historical theology. Christian history is often described in four major eras. The Patristic Period (AD 100–400) was marked by the formation of creeds and early defenses of essential doctrines, such as the deity of Christ (John 1:1). The Middle Ages and Renaissance (AD 500–1500) saw theology shaped by church institutions and emerging scholarship, including exploring the doctrine of the atonement (Romans 6:23). The Reformation and Post-Reformation Period (AD 1500–1750) centered on debates over authority and salvation (2 Timothy 3:16-17; Ephesians 2:8-9). The Modern Period (AD 1750–present) reflects cultural and philosophical pressures that challenge historic beliefs, such as the miracles of the Bible (John 2:23, 7:21; Acts 2:43).

Studying these eras helps us learn how earlier believers defended the faith, clarified doctrine, and responded to error. However, history is messy with both faithful insights and serious theological errors. Only Scripture is “God-breathed” and fully reliable (2 Timothy 3:16–17). Historical theology helps guide and refine us, but the Bible must remain our final authority, correcting anything in history that contradicts it.

FROM THE OLD TESTAMENT

• The Old Testament models historical theology by showing how God’s Word was faithfully taught across generations (Deut. 6:6–7), how prophets preserved truth and corrected error (Jer. 23:28–29), and how His commands were understood in specific historical and cultural contexts (Ex. 19–24). These patterns set the foundation for studying how Christians later interpreted and applied Scripture.

FROM THE NEW TESTAMENT

• Historical theology examines how Christians have understood and taught doctrine throughout the centuries. Such study is commendatory; Paul advised Timothy, “Keep a close watch on yourself and on the teaching. Persist in this, for by doing so you will save both yourself and your hearers” (1 Timothy 4:16 NIV).
• The Patristic Period (AD 100–400) started when the last Apostle, John, died, marking the first time the early church was on its own without a direct authoritative connection to Jesus. The church’s theological formation to guard the truth started during this period. During this time, believers defended the Trinity and the deity of Christ (John 1:1), confronted heresies such as Arianism and Gnosticism (John 14:9; Ephesians 2:8-9), and produced creeds like the Apostles’ Creed and the Nicene Creed. Key figures of this time included Ignatius, Polycarp, Athanasius, Augustine, and the Cappadocian Fathers.
• Building on that foundation, the Middle Ages and Renaissance (AD 500–1500) saw theology become deeply connected to church institutions and academic study. Thinkers such as Anselm and Thomas Aquinas explored doctrines like atonement (Romans 6:23), God’s nature, and faith and reason. Monastic movements, scholasticism, and the development of sacramental theology all influenced how believers understood the Christian life.
• The Reformation and Post-Reformation Period (AD 1500–1750) centered on debates over authority and salvation. Leaders like Luther, Calvin, and Zwingli emphasized Scripture alone as the church’s foundation and taught that salvation is by grace through faith (2 Timothy 3:16-17; Ephesians 2:8-9). Confessions such as the Augsburg Confession and the Westminster Standards clarified doctrine for emerging Protestant churches.
• The Modern Period (AD 1750–present) reflects new philosophical pressures that came from the Enlightenment. These included rationalism, skepticism, and secularism. They produced unique doctrinal challenges, such as denying miracles (John 2:23, 7:21; Acts 2:43) and questioning biblical authority (2 Timothy 3:16). Modern defenders of the faith include Charles Spurgeon, J. Gresham Machen, Francis Schaeffer, R.C. Sproul, and John MacArthur.
• While historical theology helps us to understand the formation of doctrines we hold today, Scripture is the church’s only final authority. Scripture is the only authoritative teaching (2 Timothy 3:16–17). The Bereans understood this by testing even the Apostle Paul’s teaching against Scripture (Acts 17:11). Historical theology helps us understand how others read the Bible, but Scripture alone must govern what we believe.

IMPLICATIONS FOR TODAY

Not all gifts come wrapped and bowed or through email as a digital gift card. God’s Word is a priceless gift to all believers. Though not as significant as Scripture, the study of historical theology has given the church an enormous gift, too, because through it, believers who came before us worked hard to clarify what the Bible teaches. Their efforts have given us a clearer understanding of everything from the doctrine of God to the person of Christ, the nature of salvation, the work of the Holy Spirit, and even the way we defend the faith. Many of the truths we hold with confidence today were carefully clarified and protected by faithful Christians who loved Scripture and labored to make its teaching clear.

We should receive their insights with gratitude. Indeed, it would be foolish to ignore the wisdom God provided through centuries of preaching, debates, councils, creeds, and careful reflection on His Word. Yet it would also be unwise to accept any teaching simply because it is old or respected. Every generation must continue to compare what men teach with what Scripture itself reveals. Only Scripture is authoritative. Every other teaching only has a kind of reflected authority when it rightly mirrors the truths of the Bible.

UNDERSTAND

• Historical theology studies how Christians have interpreted and taught the Bible over time.
• Historical theology shows how doctrines developed through different historical and cultural contexts.
• Scripture alone is the final authority, with historical teachings measured against it.

REFLECT

• How does studying the way Christians in the past interpreted the Bible influence your own understanding of God’s Word?
• In what areas of your faith could learning from historical theology help you grow or correct misunderstandings?
• How do you discern between valuable insights from history and teachings that conflict with Scripture?

ENGAGE

• How can examining different eras of Christian thought help us better communicate and defend our faith today?
• How might cultural and historical contexts have shaped theological debates, and how does that inform our study of the Bible?
• How can believers today apply lessons from historical theology without elevating human traditions above God’s Word?