How do we know the work of Christ is sufficient for salvation?

The work of Christ is central to the Christian faith and is affirmed as sufficient for salvation throughout the New Testament. In Hebrews 7:11-18, we are reminded that perfection could not be obtained through the Levitical priesthood, for the law could not save the people. Instead, Christ, being a priest after the order of Melchizedek, fulfilled the law through His perfect obedience and sacrificial death. His resurrection stands as proof of victory over sin, illustrating that His atonement was complete and perfect. The Epistle to the Galatians further emphasizes that we are justified by faith in Christ, not by works of the law (Galatians 2:16), confirming that our righteousness comes solely through His work.