How do we know that justification comes by faith alone?

In his epistle to the Galatians, particularly in Galatians 2:16, Paul asserts that a person is not justified by the works of the law but through faith in Jesus Christ. This doctrine is affirmed consistently throughout Scripture and emphasizes that faith, specifically the 'faith of Jesus Christ' (Galatians 2:16), is the means by which believers are made righteous before God. This foundational truth highlights the futility of relying on one’s own works for salvation and underscores that reliance on Christ alone is the path to true acceptance with God.