Joel 2:2-3

A day of darkness and gloominess, A day of clouds and thick darkness, Like the morning clouds spread over the mountains. A people come, great and strong, The like of whom has never been; Nor will there ever be any such after them, Even for many successive generations. A fire devours before them, And behind them a flame burns; The land is like the Garden of Eden before them, And behind them a desolate wilderness; Surely nothing shall escape them.