Verse Comparison: Revelation 9:9
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.
Amplified® Bible
Their breastplates (scales) resembled breastplates made of iron, and the [whirring] noise made by their wings was like the roar of a vast number of horse-drawn chariots going at full speed into battle.
Darby English Version
and they had breastplates as breastplates of iron, and the sound of their wings [was] as the sound of chariots of many horses running to war;
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.
King James 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 running to battle.
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;