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

The central tenet of the gospel is that Jesus Christ, the Son of God, was crucified for our sins, and His death is the only sufficient payment for our unrighteousness. In the sermon, it is emphasized that our righteousness before God is solely found in Christ and not in our works or any attempts to earn favor with God. The assertion that 'your righteousness before God is all Him and none of you' highlights the necessity of Christ's sacrifice. His bodily death on the cross not only fulfilled the law but also satisfied divine justice, allowing us to stand before God accepted as righteous through faith in Him. Thus, we know His sacrifice is enough, as He rose again, affirming the acceptance of His atoning work.