How do we know that justification by grace is true?

Justification by grace is a foundational tenet of Reformed theology that is supported by Scripture. In Romans 3:24, Paul writes, 'Being justified freely by His grace through the redemption that is in Christ Jesus.' This verse underscores the unmerited nature of grace and the fact that justification is granted without cost to the believer, wholly contingent on the work of Christ. Furthermore, Ephesians 2:8-9 reinforces this truth by stating that salvation is a gift from God, not dependent on works, ensuring that no one can boast in their own accomplishments. This emphasis on grace over works illustrates that the basis of our justification lies solely in the righteousness of Jesus Christ, whose obedience is imputed to those who believe.