Revelation 9:19

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.

Isaiah 9:15

The head is the elder and honorable man,
And the prophet who teaches falsehood is the tail.

Ephesians 4:14

As a result, we are no longer to be children, tossed here and there by waves and carried about by every wind of doctrine, by the trickery of men, by craftiness in deceitful scheming;

Revelation 9:10

They have tails like scorpions, and stings; and in their tails is their power to hurt 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 have tails like scorpions, and stings; and in their tails is their power to hurt men for five months.
Isaiah 9:15
The head is the elder and honorable man,
And the prophet who teaches falsehood is the tail.
Ephesians 4:14
As a result, we are no longer to be children, tossed here and there by waves and carried about by every wind of doctrine, by the trickery of men, by craftiness in deceitful scheming;