Warren Buffett, the CEO of the wide ranging Berkshire Hathaway conglomerate told his department heads that they should never make a business transaction that they would not want written up on the front page of their home paper. If you have gotten away with sinful behavior that you would not want to see printed in your parish bulletin you are probably very thankful.
If your heavenly Father lets you get away with things that would be terribly embarrassing, you owe it to him to quietly forgive the sins of others of his children. Protecting our neighbor’s good name is a smart thing for you. It insures you against God letting someone spill the beans on you.