Paul’s Furious Defense of the True Gospel Against Legalism.

FREEDOM IN CHRIST:

Justification by Faith, Not Law

Lesson 49 of 66: The Book of Galatians

The Liberation Proclamation: Saved by Faith Alone

The Book of Galatians is one of the most significant letters for understanding Christian doctrine, often called the "Magna Carta of Christian Liberty." The Apostle Paul wrote this letter to the churches in the region of Galatia (modern-day Turkey) to counter the influence of Judaizers—false teachers who insisted that Gentile Christians must be circumcised and obey the Mosaic Law to be fully saved. Paul’s response is a furious, uncompromising defense of justification by faith alone.

I. Defense of Paul's Apostolic Authority (Chapters 1–2)

Paul begins by immediately asserting the divine origin of his message and his authority as an Apostle.

  • No Other Gospel: Paul declares that the message he preaches came directly from the resurrected Christ, not from any human being. He pronounces a severe curse (anathema) on anyone—even an angel—who preaches a Gospel different from the one he delivered: “if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed.” (Galatians 1:8)

  • Confrontation with Peter: To prove the universal nature of the Gospel, Paul recounts confronting the Apostle Peter in Antioch. Peter had begun to separate himself from Gentile Christians to appease the Judaizers. Paul condemned this hypocrisy, asserting that both he and Peter were justified "not by works of the law but by faith in Jesus Christ." (Galatians 2:16)

II. Defense of the Gospel of Grace (Chapters 3–4)

This section contains Paul’s theological core argument: salvation has always been a matter of faith, not adherence to the Law.

  • The Law's Purpose: Paul asks the Galatians how they received the Holy Spirit—by observing the Law or by believing the Gospel? He reminds them that Abraham was justified by faith centuries before the Law was given.

  • The Law as a Custodian: Paul clarifies that the Law was never given to save; it was given to serve as a "guardian" or "custodian" to lead us to Christ. Once Christ came, the Law's role as a guardian ended. We are no longer under a custodian, but have become sons of God through faith.

  • Sons, Not Slaves: Paul contrasts the bondage of the Law with the freedom of sonship. Because we are sons, we have received the Spirit of God crying out, “Abba! Father!” (Galatians 4:6). To return to the Law is to return to slavery.

III. The Practice of Christian Liberty (Chapters 5–6)

The letter concludes by instructing believers on how to live in the freedom they have received, ensuring they don't abuse it.

  • Freedom Not for the Flesh: Christian liberty is not a license for immorality; it is the freedom to love and serve one another. Paul warns: “For you were called to freedom, brothers. Only do not use your freedom as an opportunity for the flesh, but through love serve one another.” (Galatians 5:13)

  • The Fruit of the Spirit: The life of a believer who walks in true freedom is defined not by external rules, but by the internal production of the Holy Spirit. Paul lists the characteristics that must mark a Spirit-led life:

“But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law.” (Galatians 5:22–23)

  • Bearing Burdens: The final instructions call for humility, genuine Christian fellowship, and persistent generosity. We are to "bear one another's burdens," which is how we fulfill the Law of Christ.

Applying the Truth Today

Galatians is a fiery defense against legalism—the tendency to believe we must do something (or not do something) to earn God’s favor. It assures us that our standing before God rests completely on the grace of Christ and is maintained by faith, not by performance. It challenges us to stand firm in the freedom Christ purchased and to use that liberty to serve one another in love, allowing the Holy Spirit to naturally produce the beautiful fruit of righteousness in our lives.

Reflection Questions for Your Journey:

  1. Freedom or Bondage. What non-essential religious rule or external performance have you been tempted to rely on for your spiritual security? How does Galatians remind you that you are a son, not a slave?

  2. The Law of Christ. How can you practically "bear one another's burdens" (Galatians 6:2) this week? What burden of a family member or friend can you help carry through prayer or action?

  3. The Fruit of the Spirit. Which specific fruit of the Spirit (love, joy, peace, etc.) are you lacking most in your life right now? What steps can you take to "keep in step" with the Holy Spirit to cultivate that fruit?

Your Reading Guide

To grasp the core doctrine, read the uncompromising statement on justification in Galatians 2:16–21. Next, read the call to freedom and service in Galatians 5:1, 13–15. Finally, memorize and reflect upon the Fruit of the Spirit in Galatians 5:22–25.