I believe that angels are forms, images, and expressions through which the essences and energy forces of God can be transmitted and that, since there are an infinite number of these forms, the greatest service anyone can pay the angelic host is never consciously to limit the ways angels might appear to us.
All aspects of the universe are subject to constant change, continually moving in the direction of enlightenment. Change but provides the doorways through which all must travel to find true peace.