Galatians 2 outlines Paul's journey to Jerusalem, where he presented his gospel message to the apostles. It highlights their recognition of Paul's mission to the Gentiles and Peter's to the circumcised, establishing a division of labour. The passage also details a confrontation between Paul and Peter in Antioch, where Paul rebuked Peter for his hypocrisy regarding association with Gentiles, emphasising that justification comes through faith in Christ and not through adherence to the law. Paul stresses that Christ's sacrifice would be rendered meaningless if righteousness were achievable by other means.