James 3:8

but the tongue no man can tame; it is an unruly evil; it is full of deadly poison.

Romans 3:13

their throat is an open sepulcher; with their tongues they have used deceit; the poison of asps is under their lips;

James 3:6

And the tongue is a fire, the world of iniquity. So is the tongue placed among our members, defiling the whole body, setting on fire the course of life, and being set on fire by hell.

Revelation 12:9

And the great dragon, that old serpent, called the Devil, and Satan, who deceives the whole world, was cast into the earth, and his angels were cast out with him.

Treasury of Scripture Knowledge

Summary

But the tongue can no man tame; it is an unruly evil, full of deadly poison.

An unruly

General references

Bible References

An unruly

James 3:6
And the tongue is a fire, the world of iniquity. So is the tongue placed among our members, defiling the whole body, setting on fire the course of life, and being set on fire by hell.

Full

Romans 3:13
their throat is an open sepulcher; with their tongues they have used deceit; the poison of asps is under their lips;
Revelation 12:9
And the great dragon, that old serpent, called the Devil, and Satan, who deceives the whole world, was cast into the earth, and his angels were cast out with him.

General references

Matthew 15:18
But those things which go out from the mouth, come from the heart; and these defile the man.