How do we know salvation is through grace by faith?

The doctrine of salvation by grace through faith is a foundational tenet of Reformed theology, rooted in several scripture passages. Ephesians 2:8-9 states that we are saved by grace through faith, not of ourselves, indicating that our salvation is a gift from God, not something we can earn through works. Additionally, Romans 3:20 makes it clear that by the deeds of the law, no flesh will be justified, reinforcing the idea that attempting to achieve righteousness through personal merit is futile. This underscores the significance of Christ's righteousness imputed to us, as He fulfilled the law's requirements on behalf of sinners, providing a way for us to be accepted by God solely based on our faith in Him.