How do we know that justification by faith alone is true?

The truth of justification by faith alone is grounded in several key biblical texts that affirm this vital doctrine. Romans 3:28 clearly states that one is justified by faith apart from works of the law, highlighting that no amount of human effort can contribute to our standing before God. Furthermore, Ephesians 2:8-9 emphasizes that it is by grace we have been saved through faith, and this is not of ourselves; it is the gift of God, not a result of works, so that no one may boast. Historical documents such as the Westminster Confession of Faith and the Canons of Dort repeatedly affirm this doctrine as central to Reformed theology. These biblical and confessional testimonies collectively establish that salvation is entirely a work of God’s grace, apprehended only through faith, thus nullifying the notion that human works play any role in our justification.