…All the fallen angels were created good but, of their own free will, they chose against God, in an act of radical disobedience prompted by pride and envy. Because, unlike the intellects and wills of human beings, angelic intellects understand reality in one act of apprehension and because angelic wills choose permanently in one act of volition, there is no possibility that the fallen angels will ever repent. Neither is there any possibility that the good angels will ever sin.