The sermon examines the theological and behavioral disconnect in the life of the Apostle Peter, specifically contrasting his initial acceptance of the Gentile mission in Acts with his later withdrawal in Antioch as recorded in Galatians. It argues that Peter's vacillation was not merely a lapse in memory but a failure to align his actions with the doctrine he had received, driven by peer pressure, prejudice, and fear of social rejection. The message emphasizes that sound doctrine must inevitably transform behavior, warning against the modern tendency to minimize theological truth in favor of cultural acceptance or entertainment. By tracing Peter's journey from vision to compromise and finally to restoration at the Jerusalem Council, the sermon calls believers to examine their own lives for inconsistencies between belief and practice. It concludes with an urgent appeal to reconcile one's conscience with biblical truth, urging both believers to live out their convictions and unbelievers to turn to Christ for salvation.