How do we know the doctrine of reconciliation with God is true?

The truth of reconciliation is rooted in God's actions through Christ, as described in 2 Corinthians 5:18-19, which states that God reconciled us to Himself through Jesus Christ. This means that in Christ, our sins are not counted against us because Christ willingly took on our sins and paid the penalty through His sacrifice. The implication is profound—our reconciliation is not based on our merit but on God's grace and sovereign will, demonstrating that He, the offended party, took the initiative to bring us back to Him.