Galatians

Purpose & theme

Galatians is Paul’s passionate, urgent defense of the gospel of grace — the truth that a sinner is justified before God by faith in Jesus Christ alone, apart from the works of the law. It was written in alarm and even anger, because false teachers (often called Judaizers) had followed Paul into the churches of Galatia and were insisting that Gentile believers must be circumcised and keep the law of Moses to be fully accepted by God. To Paul this was not a minor adjustment but a betrayal of the gospel itself — “a different gospel” that is no gospel at all. So, uniquely among his letters, he opens not with thanksgiving but with astonishment and a double curse on anyone who preaches a message contrary to the one they received: “let him be accursed” (1:8-9). The stakes could not be higher, for to add anything to Christ as the ground of our acceptance is to lose Christ altogether.

The heart of the letter is the great truth Luther called the doctrine on which the church stands or falls: “a person is not justified by works of the law but through faith in Jesus Christ” (2:16). Paul argues from his own testimony, from Scripture (Abraham was justified by faith), and from experience that righteousness comes as a free gift through faith, that the law served as a temporary guardian pointing to Christ, and that in Christ believers are no longer slaves but sons and heirs. This gospel of grace does not lead to lawless living, as critics charged; rather, it produces true freedom and, through the Holy Spirit, real holiness. “For freedom Christ has set us free” (5:1) — freedom not to indulge the flesh but to serve one another in love and to “walk by the Spirit,” bearing His fruit. Galatians is thus both a fierce guard of the gospel and a warm summons to live in the liberty and power of the Spirit.