Unpacking Galatians 4:22-26: Children of Promise

Understanding the Two Covenants: Hagar and Sarah

To grasp Paul’s point in Galatians 4:22-26, we need to remember the story of Abraham, Hagar, and Sarah from Genesis 16 and 21, where Abraham, impatient for God’s promise, has a son through his wife’s servant Hagar - but later, God fulfills His promise with Isaac, born to Sarah by divine power.

Hagar, the slave woman, represents the covenant given at Mount Sinai - this is the law, which came with rules and consequences, and Paul says it leads to slavery because no one can fully keep it on their own. Sarah, the free woman, represents the covenant of promise, where God acts by grace, not human effort, and this points to the new covenant in Christ. Paul then makes a bold connection: just as Hagar’s descendants were in slavery, so the present Jerusalem - focused on law and human effort - remains in bondage, while the Jerusalem above, the spiritual city of God, is free and is our true mother.

This contrast between slavery and freedom, law and promise, sets the stage for Paul’s call to live by the Spirit, not by human striving - a theme he will expand on in the verses ahead.

The Jerusalem Above: Freedom, Motherhood, and the New Covenant

Paul’s declaration that 'the Jerusalem above is free, and she is our mother' is a poetic image and a radical redefinition of spiritual identity and belonging.

In calling the heavenly Jerusalem our mother, Paul flips the script on how people thought about God’s people: back then, being part of God’s family was tied to physical descent and the law centered in the earthly Jerusalem. But Paul says our true origin is not earthly - it’s from above, from a spiritual city that gives birth to us through promise, not flesh. This 'Jerusalem above' echoes the vision in Isaiah 66:7-8, where Zion gives birth before her labor comes - symbolizing how God brings forth His people not through human timing or effort, but by His power and promise. He’s also drawing from the hope in Jeremiah 3:17, where the future restoration of God’s people centers on a renewed Jerusalem - not a political capital, but a spiritual reality where all nations are drawn to the Lord. This new covenant mother doesn’t operate by the old rules of Sinai, but by the life-giving Spirit.

The contrast between Hagar and Sarah is about two women, two sons, and two ways of life. Hagar, tied to Mount Sinai, represents a relationship with God based on doing enough, being good enough, measuring up. That system, Paul says, leads to slavery because it depends on us. But Sarah, who laughed at the promise yet saw God fulfill it, represents grace - God doing what we could never do. This is the same grace Paul describes in 2 Corinthians 4:6: 'For God, who said, 'Let light shine out of darkness,' has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.' Just as God spoke light into existence, He speaks new life into us - not because we earned it, but because He promised it.

We are not children of the slave, but of the free - born not by human effort, but by the promise of God.

So our true home isn’t a city made of stone under law, but a living, heavenly city of grace. And because we belong to her, we live not by striving, but by trusting - the freedom Paul will soon call us to walk in by the Spirit.

Living by Promise, Not by Law: What It Means for Us Today

The heart of Paul’s message is that our relationship with God isn’t built on following rules to earn His favor, but on receiving His promise through faith - just as Isaac was born not by human effort, but by God’s power.

For the first readers of Galatians, this was radical: many believed that keeping the law was the path to being right with God. But Paul says that way leads to slavery, like Hagar’s son, because no one can perfectly keep the law. Instead, he points to Genesis and says we are children of the free woman, born according to promise - not flesh.

This is the good news of Jesus: we are not saved by measuring up, but by trusting in the One who made a way. And this freedom in Christ prepares us for Paul’s next call - to live by the Spirit, not by human striving.

The Whole Story: How the Heavenly Jerusalem Unfolds Across Scripture

Paul’s vision of the Jerusalem above isn’t an isolated idea but a thread that weaves through the entire Bible, revealing God’s unfolding plan to bring freedom through promise, not law.

In Romans, Paul uses the same Genesis story to show that Abraham was made right with God by faith before any law existed, proving that promise comes first. This same theme echoes in Hebrews, which calls Mount Zion - and the heavenly city - to which we now draw near, where we worship not through rules but by grace through Jesus, the mediator of a better covenant.

And John’s vision in Revelation 21:2 takes it further: 'I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband.' This is the final form of the free woman - no temple, no sun, no sin, only God’s presence and light. It fulfills Isaiah’s hope and Jeremiah’s promise of a new covenant written on hearts, not stone. This city is not built by human hands or earned by effort. It comes down from heaven, a gift of grace.

The Jerusalem above is not just a future hope - it’s the spiritual reality shaping how we live now, together, by grace.

So when we live as citizens of this coming city today, we stop keeping score with each other, stop treating holiness like a checklist, and start loving like people set free. And when churches live this way - grace-centered, promise-rooted, Spirit-led - they become outposts of the Jerusalem above, pointing the world to the freedom only God can give.

Application