Verses 1-5: Paul’s Apostolic Greeting. Paul introduces himself as an apostle by divine commission and extends grace and peace to the Galatian churches, affirming Christ’s redemptive work.
Verses 6-10: Rebuke for Deserting the Gospel. Paul expresses astonishment at the Galatians’ quick departure to a different gospel and pronounces a curse on anyone preaching a gospel contrary to the one he delivered.
Verses 11-12: Divine Origin of Paul’s Gospel. Paul insists that his gospel was received by revelation from Jesus Christ, not taught by human beings.
Verses 13-24: Paul’s Personal Testimony. Paul recounts his former life as a zealous persecutor of the church, his divine calling, and his independent ministry apart from the original apostles, establishing his authority and the gospel’s divine source.