1 And the fifth angel sounded, and I saw a star fall
  from heaven unto the earth: and to him was given the
  key of the bottomless pit.
   2 And he opened the bottomless pit; and there arose
  a smoke out of the pit, as the smoke of a great
  furnace; and the sun and the air were darkened by
  reason of the smoke of the pit.
   3 And there came out of the smoke locusts upon the
  earth: and unto them was given power, as the
  scorpions of the earth have power.
   4 And it was commanded them that they should not
  hurt the grass of the earth, neither any green thing,
  neither any tree; but only those men which have not
  the seal of God in their foreheads.
   5 And to them it was given that they should not kill
  them, but that they should be tormented five months:
  and their torment was as the torment of a scorpion,
  when he striketh a man.
   6 And in those days shall men seek death, and shall
  not find it; and shall desire to die, and death shall
  flee from them.
   7 And the shapes of the locusts were like unto
  horses prepared unto battle; and on their heads were
  as it were crowns like gold, and their faces were as
  the faces of men.
   8 And they had hair as the hair of women, and their
  teeth were as the teeth of lions.
   9 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.
  10 And they had tails like unto scorpions, and there
  were stings in their tails: and their power was to
  hurt men five months.
  11 And they had a king over them, which is the angel
  of the bottomless pit, whose name in the Hebrew
  tongue is Abaddon, but in the Greek tongue hath his
  name Apollyon.
  12 One woe is past; and, behold, there come two woes
  more hereafter.
  13 And the sixth angel sounded, and I heard a voice
  from the four horns of the golden altar which is
  before God,
  14 Saying to the sixth angel which had the trumpet,
  Loose the four angels which are bound in the great
  river Euphrates.
  15 And the four angels were loosed, which were
  prepared for an hour, and a day, and a month, and a
  year, for to slay the third part of men.
  16 And the number of the army of the horsemen were
  two hundred thousand thousand: and I heard the number
  of them.
  17 And thus I saw the horses in the vision, and them
  that sat on them, having breastplates of fire, and of
  jacinth, and brimstone: and the heads of the horses
  were as the heads of lions; and out of their mouths
  issued fire and smoke and brimstone.
  18 By these three was the third part of men killed,
  by the fire, and by the smoke, and by the brimstone,
  which issued out of their mouths.
  19 For their power is in their mouth, and in their
  tails: for their tails were like unto serpents, and
  had heads, and with them they do hurt.
  20 And the rest of the men which were not killed by
  these plagues yet repented not of the works of their
  hands, that they should not worship devils, and idols
  of gold, and silver, and brass, and stone, and of
  wood: which neither can see, nor hear, nor walk:
  21 Neither repented they of their murders, nor of
  their sorceries, nor of their fornication, nor of
  their thefts.

...to Revelation chapter10