"They had breastplates like breastplates of
iron; and the sound of their wings was like
the sound of chariots, of many horses
rushing to battle.
They have tails
like scorpions, and stings;
and in their tails is their
power to hurt men for five
months.

They have as king over them, the angel of
the abyss; his name in Hebrew is Abaddon,
and in the Greek he has the name Apollyon.

The first woe is past; behold, two woes are
still coming after these things."
Revelation 9:9-12