How do we know Jesus is the author of our salvation?

The certainty of Jesus being the author of our salvation lies in His divine nature and His fulfillment of the Father's will. Hebrews 5:9 confirms that Jesus, having been made perfect through His suffering, is the source of eternal salvation for all who obey Him. His obedience unto death and the completion of the work given to Him establishes His role as the Savior. As He perfectly executed God’s plan for salvation, it assures us that faith in Him guarantees eternal life, not based on our actions but solely on His grace and provision.