Why do Christians believe in the importance of faith and works?

In Reformed theology, while salvation is by grace through faith alone, good works are an essential fruit of genuine faith. This harmonious relationship is captured in James 2:26, where it is stated that faith without works is dead. True faith, which is a gift from God, manifests itself in a transformed life that evidences good works. These works are not a means of earning favor with God; rather, they reflect a believer's gratitude for the grace received. This doctrine emphasizes that while believers are saved by grace alone, their response of faith naturally leads to a life characterized by good works as a testimony of their salvation. Thus, good works serve to glorify God and affirm one's faith in Christ.