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

Revelation 9:10

10 They have tails like scorpions, and stings; and in their tails is their power to hurt men for five months.

Revelation 9:19

19 For the power of the horses is in their mouths and in their tails; for their tails are like serpents and have heads, and with them they do harm.

Revelation 12:4

4 And his tail swept away a third of the stars of heaven and threw them to the earth. And the dragon stood before the woman who was about to give birth, so that when she gave birth he might devour her child.