Definition of Imagery
What's literally happening in the quote below is that Goodman Brown finds some people gathered around a rock in the woods. But the scene is transformed by imagery:
At one extremity of an open space, hemmed in by the dark wall of the forest, arose a rock, bearing some rude, natural resemblance either to an altar or a pulpit, and surrounded by four blazing pines, their tops aflame, their stems untouched, like candles at an evening meeting. The mass of foliage, that had overgrown the summit of the rock, was all on fire, blazing high into the night, and fitfully illuminating the whole field. Each pendent twig and leafy festoon was in a blaze. As the red light arose and fell, a numerous congregation alternately shone forth, then disappeared in shadow, and again grew, as it were, out of the darkness, peopling the heart of the solitary woods at once.
When Goodman Brown finally finds the demonic gathering in the heart of the forest, the story emphasizes the importance of the moment with heightened imagery:
Unlock with LitCharts A+He paused, in a lull of the tempest that had driven him onward, and heard the swell of what seemed a hymn, rolling solemnly from a distance, with the weight of many voices. He knew the tune; it was a familiar one in the choir of the village meeting-house. The verse died heavily away, and was lengthened by a chorus, not of human voices, but of all the sounds of the benighted wilderness, pealing in awful harmony together. Goodman Brown cried out; and his cry was lost to his own ear, by its unison with the cry of the desert.