How do we know salvation is based on grace?

The doctrine of salvation by grace alone is a cornerstone of Reformed theology, grounded in Scripture. Romans 11:6 articulates that if salvation were based on works, it would no longer be grace. True assurance of salvation is found not in our actions but in God's faithfulness. Those who truly understand grace do not boast in their own works, as the parable of the Pharisee and the tax collector illustrates; instead, they approach God with humility and dependence, aware that even their best efforts are insufficient without His grace.