This state of presence is extraordinarily important to know and taste in oneself. For sacred tradition is emphatic in its insistence that real Wisdom can be given and received only in a state of presence, with all three centers of our being engaged and awake. Anything less is known in the tradition as "sleep" and results in an immediate loss of receptivity to higher meaning. To return to that favorite Wisdom metaphor, it is like the disciple Peter suddenly sinking beneath the surface of the waters.
As humans we respond to symbols. We express divine Beauty and insight in our art. If there is a preponderance of art depicting angels with wings, obviously this symbolizes something real within the collective consciousness. Angels appear to humans according to human capacity to accept and understand the appearance. The angels inspire, and that is what is left in our heart after an angel experience.