How do we know that the doctrine of justification is true?

Justification is a foundational doctrine rooted in the righteousness of Christ applied to believers through faith. As stated in Romans 3:28, 'For we hold that one is justified by faith apart from works of the law.' This is further substantiated in the New Testament where both Paul and Peter describe justification as being by grace through faith in Jesus Christ's redemptive work. The historical resurrection of Christ also serves as assurance of our justification, confirming that His sacrifice was accepted by the Father, as outlined in Romans 4:25, highlighting that He was raised for our justification.