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 harm.

Isaiah 9:15

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

Ephesians 4:14

that we may no longer be children, tossed back and forth and carried about with every wind of doctrine, by the trickery of men, in craftiness, after the wiles of error;

Revelation 9:10

They have tails like those of scorpions, and stings. In their tails they have power 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 have tails like those of scorpions, and stings. In their tails they have power to harm men for five months.
Isaiah 9:15
The elder and the honorable man is the head, and the prophet who teaches lies is the tail.
Ephesians 4:14
that we may no longer be children, tossed back and forth and carried about with every wind of doctrine, by the trickery of men, in craftiness, after the wiles of error;