Why is faith alone important for salvation?

The doctrine of salvation by faith alone underscores the belief that it is not by works or human effort that we are saved, but by grace through believing the truth of the gospel. Ephesians 2:8-9 clearly states, "For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, so that no one may boast." This emphasizes that faith is the instrument through which God's grace is received, and it safeguards against any notion of self-righteousness. In essence, faith alone directs our reliance entirely upon the finished work of Christ, ensuring that salvation is not about our merits but solely about God's mercy and provision.