James 3:8

but no human being can tame the tongue. It is an irreconcilable evil, full of deadly poison.

Romans 3:13

Their throats are like open graves, They use their tongues to deceive; The venom of asps is behind their lips,

James 3:6

And the tongue is a fire, a world of wrong the tongue proves in our bodies, soiling the whole body and setting fire to the whole round of nature, and set on fire itself by hell.

Revelation 12:9

So the great dragon, the ancient serpent who is called the devil and Satan, who deceives the whole world, was hurled down to the earth, and his angels were hurled down 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, a world of wrong the tongue proves in our bodies, soiling the whole body and setting fire to the whole round of nature, and set on fire itself by hell.

Full

Romans 3:13
Their throats are like open graves, They use their tongues to deceive; The venom of asps is behind their lips,
Revelation 12:9
So the great dragon, the ancient serpent who is called the devil and Satan, who deceives the whole world, was hurled down to the earth, and his angels were hurled down with him.

General references

Matthew 15:18
But the things that come out of the mouth come from the heart, and they pollute a man.