How do we know salvation is by grace?

The doctrine of salvation by grace is affirmed throughout Scripture, notably in Ephesians 2:8-9, which states, 'For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast.' This underlines the Reformed understanding that salvation is entirely a work of God’s grace, independent of any human effort or merit. The gospel invites sinners to rest in the finished work of Christ rather than striving to earn salvation through their deeds, emphasizing reliance on His attributes and grace for redemption.