How do we know that Christ's sacrifice is sufficient for salvation?

Romans 3:21-26 articulates the sufficiency of Christ's sacrifice, declaring that righteousness comes through faith in Jesus Christ to all who believe, and is not achieved through the works of the law. The text emphasizes that all have sinned and that justification is granted freely by God's grace through faith in Christ's blood. This foundational truth underscores that salvation rests solely on Christ's completed work, not on human effort, thus affirming that His sacrifice is entirely sufficient for reconciliation with God and eternal life.