How do we know the doctrine of peace through Christ is true?

The resurrection of Christ serves as the cornerstone of the Christian faith and validates the doctrine of peace through Christ. Romans 4:25 states that Jesus was raised for our justification, meaning that His resurrection confirms that His sacrifice was sufficient to atone for the sins of His people. If Christ remained dead, it could indicate that His sacrifice was inadequate; however, His victorious resurrection proves that God accepted His sacrifice, thus establishing peace between Him and those He redeemed.