Matthew 12:34

You brood of snakes! how can you, bad as you are, utter anything good? For the mouth says only what the heart is full of.

Romans 3:13-14

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

James 3:6-8

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.

Treasury of Scripture Knowledge

Summary

His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.

And deceit

General references

Bible References

Full

Romans 3:14
And their mouths are full of bitter curses.

And deceit

Romans 3:13
Their throats are like open graves, They use their tongues to deceive; The venom of asps is behind their lips,

General references

Romans 3:14
And their mouths are full of bitter curses.