How do we know the doctrine of Christ as the sole Savior is true?

The Bible consistently presents Christ as the only source of salvation, which reinforces the doctrine that faith should rest solely in Him. Numerous scriptures illustrate that faith in Christ, not faith itself, is what saves. When believers look to their faith for assurance or peace, they inadvertently substitute that act for the object of their faith—Christ. The emphasis is on Christ’s redemptive work and His role in the believer's life. Understanding this distinction is crucial, as it aligns with the heart of the Gospel that Jesus is the unique and only Savior who provides hope and life to His people, a central tenet in Reformed theology.