Revelation 9:9

New International Version

They had breastplates like breastplates of iron, and the sound of their wings was like the thundering of many horses and chariots rushing into battle.

Cross References

Job 39:25

At the blast of the trumpet it snorts, ‘Aha!’ It catches the scent of battle from afar, the shout of commanders and the battle cry.

Job 40:18

Its bones are tubes of bronze, its limbs like rods of iron.

Isaiah 9:5

Every warrior’s boot used in battle and every garment rolled in blood will be destined for burning, will be fuel for the fire.

Jeremiah 47:3

at the sound of the hooves of galloping steeds, at the noise of enemy chariots and the rumble of their wheels. Parents will not turn to help their children; their hands will hang limp.

Revelation 9:17

The horses and riders I saw in my vision looked like this: Their breastplates were fiery red, dark blue, and yellow as sulfur. The heads of the horses resembled the heads of lions, and out of their mouths came fire, smoke and sulfur.