To study angels is to shed light on ourselves, especially those aspects of ourselves that have been put down in our secularized civilizations, our secularized educational systems, and even our secularized worship system. By secularization, I mean anything that sucks the awe out of things.
Compassion is a kind of fire—it disturbs, it surprises, it ignites, it burns, it sears, and it warms. Compassion incinerates denial; it especially warms and melts cold hearts, cold structures, frozen minds, and self-satisfied lifestyles. Those touched by compassion have their lives turned upside down.