It is totally unnecessary to worry about criticism, for whoever would do so, will only do so, because they are evil; in other words, people by nature love one another, however, when someone themselves has been abused, most often through unnecessary criticism, they then develop fear (and the heart cannot hold love and fear for the same thing simultaneously) As they develop fear, their love is gone; as their love is gone, they get jealous of people who do have love! hence they unnecessarily criticize!