A father once offered to serve as mediator for his son, who had been convicted of not paying a debt worth several thousands of dollars.
The judge listened to the father's offer and proceeded to examine this possibility. However, upon investigation, it was revealed that the father also had several large debts with no savings.
Due to his own debts, the father's offer to serve as mediator was not acceptable to the court.
How does this story illustrate the truth that any creature not perfectly sinless could never be an acceptable mediator between a holy God and sinful people?