The so-called “Antioch incident” reveals the failure of the agreement made in Jerusalem, which led to decisions affecting both Jewish-Christian and pagan-Christian communities. Still, no one seemed to consider the needs of mixed communities. Peter, whether to maintain peace or under pressure from extremists, stopped visiting the pagan-Christian communities. Since Peter was an authority figure, his actions did not go unnoticed and caused confusion, resulting in a break in fellowship between the two groups. Paul recognized the danger, reacted, and openly confronted Peter in front of everyone. The core issue was the truth of the Gospel: salvation is not based on Jewish law or any other law, but comes through faith, not works.