How do we know that Christ's atoning work is sufficient for salvation?

The sufficiency of Christ’s atoning work is rooted in the belief that Jesus established a perfect righteousness for His people. His sacrifice on the cross was not an inadequate offering; it was the fulfillment of God's demands for absolute perfection. Romans 7:4 illustrates that believers are united with Christ, allowing them to bear fruit unto God based on His righteousness. The assurance we find in Christ comes from His complete obedience and the truth that His sacrifice was not just for the collective, but for each individual who is called and chosen by God, reflecting the personal nature of salvation.