Revelation 9:9

Young's Literal Translation 1862

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;

Cross References

Job 39:25

Among the trumpets he saith, Aha, And from afar he doth smell battle, Roaring of princes and shouting.

Job 40:18

His bones `are' tubes of brass, His bones `are' as a bar of iron.

Isaiah 9:5

For every battle of a warrior `is' with rushing, and raiment rolled in blood, And it hath been for burning -- fuel of fire.

Jeremiah 47:3

From the sound of the stamping of the hoofs of his mighty ones, From the rushing of his chariot, the noise of his wheels, Fathers have not turned unto sons, From feebleness of hands,

Revelation 9:17

And thus I saw the horses in the vision, and those sitting upon them, having breastplates of fire, and jacinth, and brimstone; and the heads of the horses `are' as heads of lions, and out of their mouths proceedeth fire, and smoke, and brimstone;