How do we know that salvation comes through faith alone?

The doctrine of justification by faith alone is rooted in Scripture, particularly in Ephesians 2:8-9, which states that we are saved by grace through faith, not of ourselves, as it is the gift of God. This excludes any notion that human effort or righteousness can contribute to salvation. Moreover, Romans 3:24 further clarifies that we are justified freely by His grace, echoing the biblical truth that faith is the sole means by which we receive the benefits of Christ’s atoning work. Therefore, salvation is entirely of grace and secured for us through faith in Christ.