The power equipment removing boulders from the road. A sure knowledge of the spiritual is an open door to great rewards and joys unspeakable. To ignore the testimony is to grope in caves of impenetrable darkness, to creep along in fog over hazardous highways. That person is to be pitied who may still be walking in darkness at noonday, who is tripping over obstacles that can be removed, and who dwells in the dim flickering candlelight of insecurity and skepticism when he need not. The spiritual knowledge of truth is the electric light illuminating the cavern; the wind and sun dissipating the fog; the power equipment removing boulders from the road. It is the mansion on the hill replacing the shack in the marshes; the harvester shelving the sickle and cradle; the tractor, train, automobile, and plane displacing the ox team. It is the rich nourishing kernels of corn instead of the husks in the trough. (Spencer W. Kimball, Faith Precedes the Miracle, Salt Lake City; Deseret Book Company, 1972, p. 14.)