How do we know that justification comes through faith in Christ alone?

The doctrine of justification by faith is rooted deeply in Scripture, particularly in texts such as Romans 3:28, where Paul states, 'Therefore we conclude that a man is justified by faith without the deeds of the law.' Furthermore, Galatians reinforces this truth by illustrating that righteousness does not come from law keeping but through faith in Jesus Christ (Galatians 2:16). The futility of trying to attain righteousness through works is highlighted repeatedly in Paul’s writings, making it clear that salvation is based on grace alone, achieved through Christ alone. This is foundational to the Reformed doctrine, emphasizing that before God, our faith in Christ's completed work is what secures our standing.