Romans 3:13-14

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

James 3:5-9

So, also, the tongue is a little member, and boasts great things. Behold, how great a forest does a little fire set in a blaze.

Revelation 21:8

But the fearful, and the unbelieving, and the detestable, and murderers and lewd persons and sorcerers and idolaters and all liars, shall have their part in the lake that burns with fire and brimstone, 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 sepulcher; with their tongues they have used deceit; the poison of asps is under their lips;
James 3:5
So, also, the tongue is a little member, and boasts great things. Behold, how great a forest does a little fire set in a blaze.
Revelation 21:8
But the fearful, and the unbelieving, and the detestable, and murderers and lewd persons and sorcerers and idolaters and all liars, shall have their part in the lake that burns with fire and brimstone, which is the second death.