Why is faith alone important for Christians?

Faith alone is a foundational principle of Reformed theology, affirming that individuals are justified before God solely through faith in Jesus Christ. This doctrine highlights that human effort cannot achieve righteousness, as expressed 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.' The story of the thief on the cross serves as a powerful reminder that trust in Christ alone, independent of religious rituals or good deeds, is what accords us salvation. This truth releases Christians from the burden of trying to earn their way into heaven and allows for rest in the finished work of Christ.