What remain constant in every account of angels, from ancient days to the present, is that they are both messengers and companions to humans, sent from a realm beyond usual seeing. Angels appear, and in one way or another, help us, advise us, inspire us, or amaze us.
The presence of love kindles into the will a fire of sacred love. Being always with the Holy One, who is a consuming fire, reduces to ashes whatever can be in opposition to it. The soul thus aflame can no longer live except in the Presence, a presence that produces in its heart a holy ardor, a sacred eagerness, and a fierce yearning to see God loved, known, served, and loved by all creatures.
~ from PRACTICING THE PRESENCE by Br. Lawrence (17th c.)