Revelation 9:10; Revelation 9:19; Revelation 12:4

Revelation 9:10

10 And they had tails like unto scorpions, and there were stings in their tails: and their power was to hurt men five months.

Revelation 9:19

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.

Revelation 12:4

4 And his tail drew the third part of the stars of heaven, and did cast them to the earth: and the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born.