How do we know that Christ is enough for salvation?

We know that Christ is enough for salvation because Scripture declares that there is no other name under heaven given among men by which we must be saved (Acts 4:12). His atonement is sufficient to cover all sins, and He is the only mediator between God and man (1 Timothy 2:5). The completeness of Christ ensures that no human work can contribute to our salvation, affirming the doctrine of grace alone, which teaches that we are saved solely through faith in Him. By His sacrifice, He fully satisfies God's justice, providing eternal life to all who believe.