---
title: "Understanding covenant theology"
description: "Learn how God’s covenant promises connect the Bible’s story, from Adam to salvation in Jesus Christ."
canonical: "https://ctkrp.org/learn/topics/covenant-theology/"
source: "https://ctkrp.org/assets/rpcna-constitution-2026.pdf"
---

EXPLORE THE REFORMED FAITH

# Understanding covenant theology

God deals with His people through covenants. His promises help us read the Old and New Testaments as one unfolding story fulfilled in Christ.

[Study by topic](https://ctkrp.org/learn/topics/) · [Common questions](https://ctkrp.org/learn/rpcna-questions/) · [Reformed glossary](https://ctkrp.org/learn/glossary/)

On this page
- [Start with Scripture](https://ctkrp.org/learn/topics/covenant-theology/#scripture)
- [God’s promise and our representative](https://ctkrp.org/learn/topics/covenant-theology/#gods-promise-and-our-representative)
- [One Savior throughout Scripture](https://ctkrp.org/learn/topics/covenant-theology/#one-savior-throughout-scripture)
- [Promise and fulfillment](https://ctkrp.org/learn/topics/covenant-theology/#promise-and-fulfillment)
- [Read the standards](https://ctkrp.org/learn/topics/covenant-theology/#standards)
- [Reflect and discuss](https://ctkrp.org/learn/topics/covenant-theology/#reflect)
- [Keep exploring](https://ctkrp.org/learn/topics/covenant-theology/#next)[← Resource library](https://ctkrp.org/resources/)

## Start with Scripture

Read these passages in context before moving to the explanation.

- Genesis 17:1–8
- Romans 5:12–21
- Galatians 3:16–29
- Hebrews 8:6–13[Open the first passage in our Bible reader →](https://ctkrp.org/bible/?q=Genesis%2017%3A1%E2%80%938)

## God’s promise and our representative

A covenant is a relationship established by God, with promises and obligations. The Westminster Confession describes God’s covenant with Adam as a covenant of works: life was promised upon perfect obedience. Adam acted as a representative, and his fall brought sin and death to his descendants. Romans 5 sets Adam beside Christ, whose obedience brings righteousness and life to His people.

## One Savior throughout Scripture

After the fall, God made known the covenant of grace. He freely offers life and salvation through Jesus Christ, calling sinners to faith and giving His Spirit to make them willing and able to believe. The Old Testament promises, sacrifices, and ceremonies pointed forward to Christ. Their fulfillment means we do not carry the temple’s sacrificial order into the church’s worship.

## Promise and fulfillment

The Confession teaches that the covenant of grace is one in substance, administered differently before and after Christ’s coming. This unity does not erase the changes brought by His finished work. Read a passage in its own setting, then ask how it fits the Bible’s movement toward Christ. God’s faithfulness gives His people reason to trust Him, and His covenant calls them to respond with faith and obedience.

## Read the standards

Follow the topic into the church’s confessional texts. The chapter readers include Scripture proofs and an optional Confession–Testimony comparison.

- [Westminster Confession of Faith · Chapter 7](https://ctkrp.org/confession/chapter-7-gods-covenant-with-man/)
- [Westminster Shorter Catechism · Question 12](https://ctkrp.org/shorter-catechism/question-12-what-special-act-of-providence-did-god-exercise-toward/)
- [Westminster Shorter Catechism · Question 20](https://ctkrp.org/shorter-catechism/question-20-did-god-leave-all-mankind-to-perish-in-the/)
- [Westminster Larger Catechism · Question 31](https://ctkrp.org/larger-catechism/question-31-with-whom-was-the-covenant-of-grace-made/)
- [Reformed Presbyterian Testimony · Chapter 7](https://ctkrp.org/testimony/chapter-7-gods-covenant-with-man/)

## Reflect and discuss

- How does Romans 5 compare Adam and Christ?
- What do the Old Testament sacrifices teach us to look for in Christ?
- How do God’s promises shape our response to Him?

## Keep exploring

[Salvation by grace through faith →](https://ctkrp.org/learn/topics/salvation-by-grace/)[Baptism and the children of believers →](https://ctkrp.org/learn/topics/baptism/)[Look up an unfamiliar word →](https://ctkrp.org/learn/glossary/)

[Talk with us about your questions](https://ctkrp.org/contact/)

[↑ Back to contents](https://ctkrp.org/learn/topics/covenant-theology/#contents)

Original source: [2026 RPCNA Constitution](https://ctkrp.org/assets/rpcna-constitution-2026.pdf)

## Related reading

- [Westminster Confession of Faith · Chapter 7: Of God’s Covenant with Man](https://ctkrp.org/confession/chapter-7-gods-covenant-with-man/)
- [Westminster Shorter Catechism · Question 12: What special act of providence did God exercise toward man in the estate wherein he was created?](https://ctkrp.org/shorter-catechism/question-12-what-special-act-of-providence-did-god-exercise-toward/)
- [Westminster Larger Catechism · Question 20: What was the providence of God toward man in the estate in which he was created?](https://ctkrp.org/larger-catechism/question-20-what-was-the-providence-of-god-toward-man-in/)

Canonical page: https://ctkrp.org/learn/topics/covenant-theology/