Thomas Aquinas

“ It would seem that there is no precedence among the demons. For every precedence is according to some order of justice. But the demons are wholly fallen from justice. Therefore there is no precedence among them. ”

“ I answer that, The whole order of precedence is first and originally in God; and it is shared by creatures accordingly as they are the nearer to God. For those creatures, which are more perfect and nearer to God, have the power to act on others. Now the greatest perfection and that which brings them nearest to God belongs to the creatures who enjoy God, as the holy angels; of which perfection the demons are deprived; and therefore the good angels have precedence over the bad, and these are ruled by them. ”

“ The demons are not equal in nature; and so among them there exists a natural precedence; which is not the case with men, who are naturally equal. That the inferior are subject to the superior, is not for the benefit of the superior, but rather to their detriment; because since to do evil belongs in a pre-eminent degree to unhappiness, it follows that to preside in evil is to be more unhappy.
Art. 3 - Whether there is enlightenment in the demons? Objection 1: It would seem that enlightenment is in the demons. For enlightenment means the manifestation of the truth. ”