Angels are not governed by the rules of man's salvation; by their nature, they are already saved. When they light on earth, they are free to act as they please, secure in the knowledge that they are beyond judgement, that nothing here can bring them to ground. They cannot be soiled with guilt, and so they are always innocent. which might lead you to believe that angels are inherently good. But remember that Lucifer was an angel.
Greg Bills
Fearful Symmetry