This comes from a devotional book we found in my Mom's home while we were cleaning up after she fell asleep in Jesus. The book is in my office and I believe was published in the early 20th century (although I don't remember the exact date).
Is there anything more precious and joyous than to know that debts which would have rendered us forever unhappy have been paid? In the payment of these awful debts consist the great glory of God's kingdom.