International Standard Version They had breastplates like iron, and the noise of their wings was like the roar of chariots with many horses rushing into battle.
American Standard Version And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots, of many horses rushing to war.
Young's Literal Translation and they had breastplates as breastplates of iron, and the noise of their wings is as the noise of chariots of many horses running to battle;