How do we know that Christ's work of reconciliation is complete?

The doctrine of reconciliation is rooted in the understanding that Christ's atoning sacrifice satisfies God's justice, thereby reconciling believers to Him. Romans 5:10 states that we were reconciled to God by the death of His Son, indicating that this reconciliation was accomplished in the past. The sacrificial death of Jesus is the grounds for our reconciled status. Furthermore, Colossians 1:21-22 explains that believers, once alienated, are now reconciled in the body of His flesh through death. Therefore, the completion of Christ's work assures us that reconciliation is fully accomplished, not contingent upon our acceptance but solely on His grace.