Proverbs 26:2 - Clarke's commentary and critical notes on the Bible

As the bird by wandering, as the swallow by flying, so the curse causeless shall not come. As the bird - צפור tsippor is taken often for the sparrow; but means generally any small bird. As the sparrow flies about the house, and the swallow emigrates to strange countries; so an undeserved malediction may flutter about the neighborhood for a season: but in a short time it will disappear as the bird of passage; and never take effect on the innocent person against whom it was pronounced.