Consider how much you owe to his forgiving grace, that after ten thousand affronts he loves you as infinitely as ever; and after a myriad sins, his Spirit still resides within you. Consider what you owe to his power; how he has raised you from your death in sin how he has preserved your spiritual life, how he has kept you from falling, and how, though a thousand enemies have beset your path, you have been able to hold on your way! Consider what thou owest to his immutablity. Though thou hast changed a thousand times, he has not changed once; though thou hast shifted thy intentions, and thy will, yet has he not once swerved from his eternal purpose, but still has held thee fast. Consider thou art as deep in debt as thou canst be to every attribute of God. To God thou owest thyself, and all thou hast. “Brethren, we are debtors.”
Spurgeon, Charles H. Spurgeon’s Sermons. Vol. 2. The Christian, A Debtor. August 10, 1856.