How do we know God's grace is sufficient for our debts?

God's grace is fully sufficient to cover our debts based on the redemptive work of Christ. The sermon emphasizes that grace and mercy cannot be bestowed unless justice is satisfied, highlighting the necessity of Christ’s sacrifice. In Romans 10:9-10, the confession of faith is tied directly to God’s promise of salvation, illustrating that recognizing our debt and turning to Christ fulfills that justice. Just as Elisha provided for the widow's immediate needs, Christ provides for our ultimate need by fully atoning for our sins, which is a fulfillment of the law’s demands. Therefore, believers can rest assured that in their state of utter sinfulness, they are not left without hope, for justice has been satisfied in Christ.