Matthew 12:34

You brood of vipers! How can you, wicked as you are, say anything that is good? For the mouth talks about the things that fill the heart.

Romans 3:13-14

Their throats are just like open graves, with their tongues they have spoken treachery; the poison of asps is under their lips.

James 3:6-8

And the tongue is a fire, and takes its place among the parts of our bodies as a world of evil; it soils the whole body and sets on fire the circle of man's nature, and itself is set on fire 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
Their mouths are full of bitter cursing.

And deceit

Romans 3:13
Their throats are just like open graves, with their tongues they have spoken treachery; the poison of asps is under their lips.

General references

Romans 3:14
Their mouths are full of bitter cursing.