Annihilation itself is no death to evil. Only good where evil was, is evil dead. An evil thing must live with its evil until it chooses to be good. That alone is the slaying of evil.
George MacDonald (2015). “The Complete Novels of George Macdonald (Illustrated): The Princess and the Goblin, The Princess and Curdie, Phantastes, At the Back of the North Wind, Lilith, David Elginbrod, Malcolm, Ranald Bannerman's Boyhood, Wilfrid Cumbermede and many more”, p.1525, e-artnow