Joel 2:4

2:3 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.

2:4 Their appearance is like the appearance of horses; And like swift steeds, so they run.

2:5 With a noise like chariots Over mountaintops they leap, Like the noise of a flaming fire that devours the stubble, Like a strong people set in battle array.