How do we know Christ has defeated sin and death?

The assurance of Christ's victory over sin and death is rooted in the fulfillment of God's redemptive plan as revealed in Scripture. In Matthew 11:12, the kingdom's vigorous advancement indicates that the battle against spiritual enemies has already been won. Furthermore, the narrative in 2 Kings 7 illustrates God's provision for those in desperate need, showcasing that the siege of sin is over for believers. Just as the lepers found sustenance and safety when they ventured into the enemy's camp, so too do sinners find abundant grace and redemption in Christ, who has already secured victory through His death and resurrection. The prophets foretold this triumph, and through faith, believers can lay claim to the spoils of grace promised in Christ.