What is the meaning of the wings of faith?

Folk believe that every wrong is righted in the spirit world, and that we, its angel-denizens, have only to fold our fair wings, while the great Judge places all our enemies on His left side and finally sends them to add fuel to the flames of Hell. Unfortunately—or fortunately, according to your morals, this belief, like many another fable, has no basis in reality.

—Jane Carlyle in Spirit