How do we know that salvation is fully a work of God?

The doctrine of salvation by grace alone is central to the Reformed faith, emphasizing that it is entirely the work of God. Romans 11:5-6 presents a crucial theological point: if salvation is by grace, then it cannot be by works; otherwise, grace ceases to be grace. Peter articulates this truth when he recounts that believers are kept by the power of God through faith, not by their own efforts. Salvation originates from God's mercy and grace, excluding human merit or contribution. Thus, understanding that we are recipients of grace rather than contributors to our salvation helps us fully appreciate the depth of God's redemptive work.