Revelation 9:19

For the power of the horses lay in their mouths and their tails; their tails were like snakes, and they had heads with which they hurt people.

Ephesians 4:14

We must not be babies any longer, blown about and swung around by every wind of doctrine through the trickery of men with their ingenuity in inventing error.

Revelation 9:10

They had tails and stings like scorpions; it was in their tails that their power lay to harm men for 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
They had tails and stings like scorpions; it was in their tails that their power lay to harm men for five months.
Ephesians 4:14
We must not be babies any longer, blown about and swung around by every wind of doctrine through the trickery of men with their ingenuity in inventing error.