Revelation 9:1, 3, 5-6

Then the fifth angel sounded, and I saw a star from heaven which had fallen to the earth; and the key of the bottomless pit was given to him.

Then out of the smoke came locusts upon the earth, and power was given them, as the scorpions of the earth have power.

And they were not permitted to kill anyone, but to torment for five months; and their torment was like the torment of a scorpion when it stings a man. And in those days men will seek death and will not find it; they will long to die, and death flees from them.