Revelation 9:19

For the power of the horses is in their mouth, and in their tails: for their tails are like serpents, having heads, and with them they do hurt.

Ephesians 4:14

in order that we may be no longer infants, tossed by the waves and carried about by every wind of teaching, in the caprice of the people, in their craftiness, pursuant to their method of delusion;

Revelation 9:10

And they have tails like scorpions, and stings: and their power is in their tails, to hurt men five months:

Treasury of Scripture Knowledge

Summary

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.

Bible References

In their tails

Revelation 9:10
And they have tails like scorpions, and stings: and their power is in their tails, to hurt men five months:
Ephesians 4:14
in order that we may be no longer infants, tossed by the waves and carried about by every wind of teaching, in the caprice of the people, in their craftiness, pursuant to their method of delusion;