How do we know Jesus' sacrifice is sufficient for our sins?

The efficacy of Christ's sacrifice is rooted in the theological principle that He bore the full weight of God's wrath for His people. As Paul explains in Romans, 'There is therefore now no condemnation to them which are in Christ Jesus' (Romans 8:1). By satisfying God’s justice through His death, Jesus allows believers to be reconciled with God. John 12:31-32 expresses that His sacrificial act leads to the judgment of the world and the casting out of Satan. Thus, His sacrifice is not only sufficient but necessary for the redemption of His people, ensuring that believers are justified and can stand before God without condemnation. The substitutionary atonement of Christ fulfills the Old Testament sacrificial system, confirming that Jesus is the ultimate Lamb of God who takes away the sin of the world.