Revelation 9:19

For the power of the horses is in their mouths and in their tails. For their tails are like serpents with heads, and with them they work woe.

Ephesians 4:14

So we shall no longer be children, tossed up and down, and blown about by every wind of teaching, tricked by the craft of men in the snares of misleading error;

Revelation 9:10

And they have tails like scorpions, and stings, and their power to torture men five months was in their tails.

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 to torture men five months was in their tails.
Ephesians 4:14
So we shall no longer be children, tossed up and down, and blown about by every wind of teaching, tricked by the craft of men in the snares of misleading error;