Revelation 9:5

9:5 The locusts were not given permission to kill them, but only to torture them for five months, and their torture was like that of a scorpion when it stings a person.

Revelation 9:10-11

9:10 They have tails and stingers like scorpions, and their ability to injure people for five months is in their tails. 9:11 They have as king over them the angel of the abyss, whose name in Hebrew is Abaddon, and in Greek, Apollyon.