Chapter II: PERSONAL APOLOGIA: AN AUTOBIOGRAPHICAL RETROSPECT.--The apostle's

teaching derived from God and not man, as proved by the circumstances of: 1. His education (ch. i. 13, 14). 2. His conversion (ch. i. 15-17). 3. His intercourse with the other apostles (ch. i. 18-24, ii. 1-10). 4. His conduct in the controversy with Peter at Antioch (ch. ii. 11-14). The subject of which controversy was the supersession of the law by Christ (ch. ii. 15-21).