Romans 3:13-14

"Their throat is an open grave; they use their tongues to practice deceit." "The poison of asps is under their lips."

James 3:5-9

So also the tongue is a small part of the body, and yet it boasts of great things. See how great a forest is set aflame by such a small fire!

Revelation 21:8

But as for the cowardly, the unbelieving, the immoral, as for murderers, fornicators, sorcerers, idolaters, and all liars, their lot will be in the lake that burns with fire and sulfur, which is the second death."

Treasury of Scripture Knowledge

Summary

Thou givest thy mouth to evil, and thy tongue frameth deceit.

Bible References

Tongue

Romans 3:13
"Their throat is an open grave; they use their tongues to practice deceit." "The poison of asps is under their lips."
James 3:5
So also the tongue is a small part of the body, and yet it boasts of great things. See how great a forest is set aflame by such a small fire!
Revelation 21:8
But as for the cowardly, the unbelieving, the immoral, as for murderers, fornicators, sorcerers, idolaters, and all liars, their lot will be in the lake that burns with fire and sulfur, which is the second death."