The Promise and the Law
Discovering How God's Grace Fulfills His Unshakable Covenant
Sermon Summary
This sermon addresses the subtle burden of spiritual legalism where believers try to maintain their relationship with God through self-reliant effort and religious rule-keeping. Through Galatians 3, Paul demonstrates that God established His covenant of grace with Abraham four centuries before the Law of Moses was introduced, making salvation dependent on God's faithful promise rather than human legal compliance. Listeners are invited to abandon self-righteous striving, embrace justification through faith in Jesus Christ, and live confidently as adopted sons and daughters of God.
Introduction
Every human being knows the pressure of performative acceptance. From our earliest school days to our modern workplaces, we are taught that approval must be earned and maintained through effort and achievement. Unfortunately, many sincere Christians bring this exact same burden into their relationship with God. We easily fall into the trap of believing that while God saved us by grace, He only accepts us day by day if we measure up to a checklist of religious performance. When we fail, we feel rejected and condemned. In Galatians 3, the apostle Paul addresses a congregation facing this exact spiritual crisis. False teachers had convinced the Galatian believers that their faith in Jesus was insufficient unless they also submitted to the rites and obligations of the Law of Moses. Paul writes with urgent passion to restore their focus to the core of the gospel: God's promise of grace came before the law and remains unbroken in Jesus Christ.
Main Scripture
Galatians 3:15-18
Brothers, speaking of human terms, though it is only a man ’s covenant, yet when it has been confirmed, no one makes it void or adds to it. Now the promises were spoken to Abraham and to his offspring. He doesn’ t say, “ To descendants ”, as of many, but as of one, “ To your offspring”, which is Christ. Now I say this: A covenant confirmed beforehand by God in Christ, the law, which came four hundred thirty years after, does not annul, so as to make the promise of no effect. For if the inheritance is of the law, it is no more of promise; but God has granted it to Abraham by promise.
Galatians 3:15-18 serves as the anchor for Paul's foundational argument regarding redemptive history. In these verses, Paul uses the legal reality of human covenants to illustrate an eternal spiritual truth: once a covenant is formally established, subsequent additions cannot alter or void its original terms. God made a binding covenant of promise with Abraham, guaranteeing that salvation and blessing would come through his singular Offspring, who is Jesus Christ. Because the Law of Moses was given four hundred and thirty years after Abraham, it was never intended to replace, modify, or add conditions to God's promise. The inheritance of eternal life is rooted entirely in God's freely given word, showing that our standing before God rests on His unshakeable promise in Christ rather than our ability to keep the law.
Main Sermon Points
1. Stop Relying on Human Effort
Foolish Galatians, who has bewitched you not to obey the truth, before whose eyes Jesus Christ was openly portrayed among you as crucified? I just want to learn this from you: Did you receive the Spirit by the works of the law, or by hearing of faith? Are you so foolish? Having begun in the Spirit, are you now completed in the flesh?
Paul reminds the Galatians of their conversion experience. They received the Holy Spirit not by observing legal rituals, but by hearing and believing the gospel of the crucified Christ. It is spiritual foolishness to think that a life birthed by the Holy Spirit can be sustained or perfected by fleshly human performance.
Paul uses strong pastoral language to expose spiritual deception. When believers shift their focus from the finished work of the cross to their own moral achievements, they fall back into self-reliance. True sanctification operates on the exact same principle as justification: trusting in what Christ has done rather than what we can accomplish.
In daily life, stop evaluating your standing with God based on your personal successes or failures during the week. Whether in family life, church leadership, or daily work in Nairobi or anywhere else, serve God out of gratitude for His grace rather than a desperate desire to earn His love. Examine your heart daily to ensure your confidence rests in Christ alone.
Quick Insights
- Salvation begins by faith in the Holy Spirit and must continue by faith every single day.
- Human effort cannot complete or improve what the grace of Jesus Christ has already finished.
- Looking to self-performance for spiritual assurance leads directly to spiritual exhaustion and pride.
2. Trust God's Unshakable Covenant Promise
Christ redeemed us from the curse of the law, having become a curse for us. For it is written, “ Cursed is everyone who hangs on a tree, ” that the blessing of Abraham might come on the Gentiles through Christ Jesus, that we might receive the promise of the Spirit through faith.
Because the law demands perfect obedience, failing to keep it brings a divine curse. Jesus stepped into our place on the cross, taking that curse upon Himself so that the promised blessing of Abraham and the Holy Spirit could be poured out on all who believe.
God's promises are foundational and irrevocable. Long before the legal system was revealed at Mount Sinai, God bound Himself by oath to bless all nations through Abraham's seed. On the cross, Jesus fulfilled the requirement of justice by bearing the penalty of our lawbreaking, ensuring that God's grace flows freely to all who trust in Him.
When guilt or spiritual fear attacks your heart, remind yourself of the cross where Jesus bore your curse. In times of personal financial hardship, sickness, or uncertainty in business, anchor your soul in God's covenant promises rather than changing circumstances. God always honours His word.
Quick Insights
- Jesus took the curse of our broken laws so we could receive the blessing of God's grace.
- God's promises are grounded in His unchanging character rather than our fluctuating human performance.
- The gift of the Holy Spirit is the living proof of God's covenant faithfulness to every believer.
3. Let the Law Lead You to Christ
So that the law has become our tutor to bring us to Christ, that we might be justified by faith. But now that faith has come, we are no longer under a tutor.
The law served as a guardian and teacher, highlighting our sin and inability to save ourselves. Its true purpose was never to justify us, but to guide us directly to Jesus Christ so that we could be made right with God through faith.
In ancient Greek culture, a tutor was a trusted guardian assigned to supervise children until they reached maturity. God's law served this exact guardian purpose in redemptive history. It set high standards that exposed human sinfulness, driving humanity to recognise its desperate need for a Savior.
Use God's moral law as a mirror to reveal your need for Christ, not as a ladder to reach heaven. When teaching children, discipling believers, or leading in the church, emphasize that God's commandments point us to our Savior rather than serving as self-righteous accomplishments.
Quick Insights
- The primary purpose of the law is to reveal our need for a Savior, not to grant us righteousness.
- Self-righteousness is shattered when we honestly measure ourselves against the perfect standard of God's holiness.
- Now that faith in Christ has come, we relate to God as mature sons and daughters, not slaves under a tutor.
4. Live as True Heirs in Christ
For you are all children of God, through faith in Christ Jesus. For as many of you as were baptized into Christ have put on Christ. There is neither Jew nor Greek, there is neither slave nor free man, there is neither male nor female; for you are all one in Christ Jesus.
Through union with Jesus Christ, every believer becomes a full child of God and an heir of Abraham's promise. Tribal, racial, social, and gender divisions lose their power to divide us because our primary identity is found in Jesus.
Putting on Christ signifies receiving a new identity, status, and authority in the kingdom of God. In Christ, artificial human hierarchies and prejudices are destroyed. Every believer, regardless of social standing, ethnic background, or earthly position, possesses equal access to God's heavenly inheritance.
Reject every form of tribalism, social prejudice, and spiritual pride within your local church and community. Treat every fellow believer with equal dignity and honour, knowing that we are all unified co-heirs in Christ. Live with bold confidence, knowing you are a cherished child of the Heavenly Father.
Quick Insights
- Faith in Jesus Christ grants every believer full adoption as a son or daughter of God.
- In Christ Jesus, artificial human division and prejudice are completely dismantled by God's grace.
- Your highest identity is not your tribe, status, or background, but your eternal position in Jesus.
Bottom Line
Salvation and right standing before God are guaranteed solely by God's unshakeable covenant promise fulfilled in Jesus Christ, entirely apart from legalistic performance or human self-reliance.
Memorable Quote
The law shows us the deep debt of our sin, but God's promise pays every single cent through the cross of Jesus Christ.
Theological Point
The primary doctrine taught in Galatians 3 is justification by grace alone through faith alone in Jesus Christ. Paul demonstrates the theological priority and permanence of the Abrahamic covenant over the Mosaic law, showing that the law exposes human transgression while Christ fulfills the promise, redeeming believers from condemnation and granting them adoption as equal heirs of God.
Prayer Guide
- Thank God for His unshakeable covenant promise of salvation given freely through Jesus Christ.
- Ask God to free your heart from subtle legalism, self-reliance, and performance-based spirituality.
- Pray for local churches to break down tribal, social, and cultural barriers through gospel unity.
- Seek God's help to live daily in the freedom, power, and holiness of the Holy Spirit.
Responding to God’s Word
As we reflect on The Promise and the Law, we are called to evaluate where our ultimate trust lies. The law was given to reveal our holiness gap, proving our complete inability to save ourselves. But God, rich in mercy, established an unbreakable covenant promise that finds its ultimate Yes and Amen in Jesus Christ. On the cross, Jesus bore the exact curse that our disobedience deserved, clothing us in His righteousness and granting us full adoption as children of God. Today, stop striving in the weakness of human effort. Reject the burden of legalism and embrace the joyful freedom of God's grace. Turn to Jesus Christ in genuine faith, walk in step with the Holy Spirit, and live boldly as a true heir of God's eternal promises.
