Not every man that is a sinner is also undutiful: but the undutiful man cannot fail to be a sinner. Let us take an instance from general experience. Sons, though they be drunken and profligate and spendthrift, can yet love their fathers; and with all these vices, and, therefore, not free from guilt, may yet be free from undutifulness. But the undutiful, though they may be models of continence and frugality, are, by the mere fact of despising the parent, worse transgressors than if they were guilty of every sin that lies outside the category of undutifulness.