If you have never done anything wrong, you should not be worrying about devils to knock at your door.
More Chinese Proverbs:
If the dog leads the man, the man is blindChinese
Drunkenness does not produce faults; it discovers them.
Chinese
Better do a kindness near home than go far to burn incense.
Chinese
Walk sidewise and block the way.
Chinese
When with dwarfs, do not talk about pygmies.
Chinese
Pick your inn before the dark; get on your road before the dawn.
Chinese