We know we are reconciled to God by the assurance given in Scripture that God was in Christ reconciling the world to Himself (2 Corinthians 5:19).
Assurance of reconciliation comes from understanding that God's work in Christ was a complete action, not a mere opportunity for redemption. Paul states in 2 Corinthians 5:19 that God was in Christ, reconciling the world to Himself, not counting men's sins against them. This indicates that reconciliation is fully realized in Christ's sacrifice, emphasizing that it is God who takes the initiative in restoring relationships. When one believes the record God has given of His Son and recognizes their own need for redemption, they can confidently affirm their reconciliation with God. It is through the acknowledgment of Christ's finished work and faith in it that reconciliation is assured.
Commentary