fire

Fire devours in front of them, and behind them a flame burns. Before them the land is like the garden of Eden, but after them a desolate wilderness, and nothing escapes them. They have the appearance of horses, and like war-horses they charge. As with the rumbling of chariots, they leap on the top of the mountains, like the crackling of a flame of fire devouring the stubble, like a powerful army drawn up for battle.
Joel 2:3-5