This sermon studies the opening of Paul's letter to the Galatians, emphasizing the importance of maintaining the purity of the gospel message. In this passage we read Paul's urgent response to false teachings infiltrating the Galatian churches, particularly the influence of Judaizers who were adding requirements to salvation beyond faith in Christ. The sermon highlights the dangers of perverting the gospel and the need for believers to be watchful against false teachings that deviate from the core message of salvation by grace through faith in Jesus Christ.