There is an old story about two neighbors, a baker and a farmer. The baker began to be suspicious of the farmer, wondering if he wasn't getting his money's worth when he paid for a pound of butter. He weighed the farmer's butter on several occasions, and the butter consistently weighed less than a full pound. Enraged, he had him arrested for fraud.
The judge asked the farmer at the trial, "I presume you have scales?"
"Yes, of course, Your Honor," the farmer replied.
"And I presume you use standard weights to measure your goods?” the judge asked.
“Yes, generally,” said the farmer. “But I don’t use them when serving the baker,” replied the farmer.
"Then how do you hope to weigh accurately the butter you sell to your neighbor?" the judge asked.
"That's easy," the farmer said. "When the baker began to buy butter from me, I decided to buy my bread from him. I've been using his one-pound loaves to balance my scales when I portion out his butter.
Nothing could be fairer than to be judged in accordance with how we judge others. So, if you would like to avoid a stricter judgment, keep your standard of judging others as low as possible.
"For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you." (Matthew 7:2).