Revelation 9:9

Overview - Revelation 9
At the sounding of the fifth angel, a star falls from heaven, to whom is given the key to the bottomless pit.
He opens the pit, and there come forth locusts like scorpions.
12 The first woe past.
13 The sixth trumpet sounds.
14 Four angels are let loose, that were bound.
Treasury of Scripture Knowledge

Revelation 9:9  (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.

they had
9:17 Job 40:18 ; 41:23-30 Joel 2:8

and the
Job 39:25 ; Isaiah 9:5 ; Joel 2:5-7 ; Nahum 2:4 Nahum 2:5