How do we know the doctrine of justification by the faith of Christ is true?

The doctrine of justification by the faith of Christ is firmly rooted in biblical texts such as Galatians 2:16, where Paul states that a man is not justified by the works of the law, but by the faith of Jesus Christ. This distinction is vital because it clarifies that our justification is not contingent upon our faith or actions, but solely on Christ's perfect obedience and righteousness. By relying on the faith of Christ, believers can find assurance in their standing before God, knowing that it's Christ's work that justifies, not human effort or belief.