For the Believer the Sin Debt is Paid in Full

Let no debt remain outstanding, except the continuing debt to love one another, for he who loves his fellowman has fulfilled the law.

—Romans 13:8 (NIV)

Christ paid the full account of a debt, we sinners owe God the Father. The debt is paid in full, and Christ has made atonement, and that atonement is counted as righteousness for all those of faith in Christ Jesus. We believers show our love for Christ and His church by expressing our gratitude, love and forgiveness. We do so in part because it's the right thing to do. And we do so out of respect for what Christ has done for us.