Rashi on Proverbs
The balance and scales of justice are the Lord’s etc. to requite a person according to his deed. משפט is (justice in French, in German Gerechtigkeit, and so in Isaiah 7,) the retribution for a person’s sins with a balance and scales.
Rashi on Proverbs
all the weights in the bag Just as among the weights in the bag, there are large weights and small ones, so is everything according to a person’s deeds.