Whether obedience is a special virtue?

Objections

Objection 1 : It seems that obedience is not a special virtue. For disobedience is contrary to obedience. But disobedience is a general sin, because Ambrose says (De Parad. viii) that "sin is to disobey the divine law." Therefore obedience is not a special virtue.
Objection 2 : Further, every special virtue is either theological or moral. But obedience is not a theological virtue, since it is not comprised under faith, hope or charity. Nor is it a moral virtue, since it does not hold the mean between excess and deficiency, for the more obedient one is the more is one praised. Therefore obedience is not a special virtue.
Objection 3 : Further, Gregory says (Moral. xxxv) that "obedience is the more meritorious and praiseworthy, the less it holds its own." But every special virtue is the more to be praised the more it holds its own, since virtue requires a man to exercise his will and choice, as stated in Ethic. ii, 4. Therefore obedience is not a special virtue.
Objection 4 : Further, virtues differ in species according to their objects. Now the object of obedience would seem to be the command of a superior, of which, apparently, there are as many kinds as there are degrees of superiority. Therefore obedience is a general virtue, comprising many special virtues.